i40e: Fix misleading error message

This patch changes an error code for an admin queue
head overrun to use I40E_ERR_ADMIN_QUEUE_FULL instead
of I40E_ERR_QUEUE_EMPTY.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40e/i40e_adminq.c

@@ -749,7 +749,7 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw,
 	if (val >= hw->aq.num_asq_entries) {
 		i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
 			   "AQTX: head overrun at %d\n", val);
-		status = I40E_ERR_QUEUE_EMPTY;
+		status = I40E_ERR_ADMIN_QUEUE_FULL;
 		goto asq_send_command_error;
 	}