net: stmmac: dwmac-sun8i: use devm_stmmac_probe_config_dt()

Simplify the driver's probe() function by using the devres
variant of stmmac_probe_config_dt().

The calling of stmmac_pltfr_remove() now needs to be switched to
stmmac_pltfr_remove_no_dt().

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c

@@ -1224,7 +1224,7 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
 	if (ret)
 		return -EINVAL;
 
-	plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+	plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);
 	if (IS_ERR(plat_dat))
 		return PTR_ERR(plat_dat);
 
@@ -1244,7 +1244,7 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
 
 	ret = sun8i_dwmac_set_syscon(&pdev->dev, plat_dat);
 	if (ret)
-		goto dwmac_deconfig;
+		return ret;
 
 	ret = sun8i_dwmac_init(pdev, plat_dat->bsp_priv);
 	if (ret)
@@ -1295,8 +1295,6 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
 	sun8i_dwmac_exit(pdev, gmac);
 dwmac_syscon:
 	sun8i_dwmac_unset_syscon(gmac);
-dwmac_deconfig:
-	stmmac_remove_config_dt(pdev, plat_dat);
 
 	return ret;
 }
@@ -1314,7 +1312,7 @@ static void sun8i_dwmac_remove(struct platform_device *pdev)
 		clk_put(gmac->ephy_clk);
 	}
 
-	stmmac_pltfr_remove(pdev);
+	stmmac_pltfr_remove_no_dt(pdev);
 	sun8i_dwmac_unset_syscon(gmac);
 }