e1000e: cleanup goto statements to exit points without common work

Per ./Documentation/CodingStyle, goto statements are acceptable for the
centralized exiting of functions when there are multiple exit points which
share common work such as cleanup.  When no common work is required for
multiple exit points, the function should just return at these exit points
instead of doing an unnecessary jump to a centralized return.  This patch
cleans up the inappropriate use of goto statements, and removes unnecessary
variables (or move to a smaller scope) where possible as a result of the
cleanups.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/e1000e/80003es2lan.c

@@ -714,22 +714,19 @@ static s32 e1000_get_cable_length_80003es2lan(struct e1000_hw *hw)
 
 	ret_val = e1e_rphy(hw, GG82563_PHY_DSP_DISTANCE, &phy_data);
 	if (ret_val)
-		goto out;
+		return ret_val;
 
 	index = phy_data & GG82563_DSPD_CABLE_LENGTH;
 
-	if (index >= GG82563_CABLE_LENGTH_TABLE_SIZE - 5) {
-		ret_val = -E1000_ERR_PHY;
-		goto out;
-	}
+	if (index >= GG82563_CABLE_LENGTH_TABLE_SIZE - 5)
+		return -E1000_ERR_PHY;
 
 	phy->min_cable_length = e1000_gg82563_cable_length_table[index];
 	phy->max_cable_length = e1000_gg82563_cable_length_table[index + 5];
 
 	phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
 
-out:
-	return ret_val;
+	return 0;
 }
 
 /**
@@ -1348,12 +1345,9 @@ static s32 e1000_read_mac_addr_80003es2lan(struct e1000_hw *hw)
 	 */
 	ret_val = e1000_check_alt_mac_addr_generic(hw);
 	if (ret_val)
-		goto out;
-
-	ret_val = e1000_read_mac_addr_generic(hw);
+		return ret_val;
 
-out:
-	return ret_val;
+	return e1000_read_mac_addr_generic(hw);
 }
 
 /**

drivers/net/ethernet/intel/e1000e/82571.c

@@ -564,7 +564,6 @@ static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw)
 static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw)
 {
 	u32 extcnf_ctrl;
-	s32 ret_val = 0;
 	s32 i = 0;
 
 	extcnf_ctrl = er32(EXTCNF_CTRL);
@@ -586,12 +585,10 @@ static s32 e1000_get_hw_semaphore_82573(struct e1000_hw *hw)
 		/* Release semaphores */
 		e1000_put_hw_semaphore_82573(hw);
 		e_dbg("Driver can't access the PHY\n");
-		ret_val = -E1000_ERR_PHY;
-		goto out;
+		return -E1000_ERR_PHY;
 	}
 
-out:
-	return ret_val;
+	return 0;
 }
 
 /**
@@ -1409,27 +1406,25 @@ bool e1000_check_phy_82574(struct e1000_hw *hw)
 {
 	u16 status_1kbt = 0;
 	u16 receive_errors = 0;
-	bool phy_hung = false;
 	s32 ret_val = 0;
 
 	/*
 	 * Read PHY Receive Error counter first, if its is max - all F's then
 	 * read the Base1000T status register If both are max then PHY is hung.
 	 */
 	ret_val = e1e_rphy(hw, E1000_RECEIVE_ERROR_COUNTER, &receive_errors);
-
 	if (ret_val)
-		goto out;
+		return false;
 	if (receive_errors == E1000_RECEIVE_ERROR_MAX)  {
 		ret_val = e1e_rphy(hw, E1000_BASE1000T_STATUS, &status_1kbt);
 		if (ret_val)
-			goto out;
+			return false;
 		if ((status_1kbt & E1000_IDLE_ERROR_COUNT_MASK) ==
 		    E1000_IDLE_ERROR_COUNT_MASK)
-			phy_hung = true;
+			return true;
 	}
-out:
-	return phy_hung;
+
+	return false;
 }
 
 /**
@@ -1831,23 +1826,20 @@ static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw)
  **/
 static s32 e1000_read_mac_addr_82571(struct e1000_hw *hw)
 {
-	s32 ret_val = 0;
-
 	if (hw->mac.type == e1000_82571) {
+		s32 ret_val = 0;
+
 		/*
 		 * If there's an alternate MAC address place it in RAR0
 		 * so that it will override the Si installed default perm
 		 * address.
 		 */
 		ret_val = e1000_check_alt_mac_addr_generic(hw);
 		if (ret_val)
-			goto out;
+			return ret_val;
 	}
 
-	ret_val = e1000_read_mac_addr_generic(hw);
-
-out:
-	return ret_val;
+	return e1000_read_mac_addr_generic(hw);
 }
 
 /**