net: stmmac: dwmac-socfpga: 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>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -400,21 +400,19 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	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);
 
 	dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL);
-	if (!dwmac) {
-		ret = -ENOMEM;
-		goto err_remove_config_dt;
-	}
+	if (!dwmac)
+		return -ENOMEM;
 
 	dwmac->stmmac_ocp_rst = devm_reset_control_get_optional(dev, "stmmaceth-ocp");
 	if (IS_ERR(dwmac->stmmac_ocp_rst)) {
 		ret = PTR_ERR(dwmac->stmmac_ocp_rst);
 		dev_err(dev, "error getting reset control of ocp %d\n", ret);
-		goto err_remove_config_dt;
+		return ret;
 	}
 
 	reset_control_deassert(dwmac->stmmac_ocp_rst);
@@ -422,7 +420,7 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 	ret = socfpga_dwmac_parse_data(dwmac, dev);
 	if (ret) {
 		dev_err(dev, "Unable to parse OF data\n");
-		goto err_remove_config_dt;
+		return ret;
 	}
 
 	dwmac->ops = ops;
@@ -431,7 +429,7 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 
 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 	if (ret)
-		goto err_remove_config_dt;
+		return ret;
 
 	ndev = platform_get_drvdata(pdev);
 	stpriv = netdev_priv(ndev);
@@ -492,8 +490,6 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 
 err_dvr_remove:
 	stmmac_dvr_remove(&pdev->dev);
-err_remove_config_dt:
-	stmmac_remove_config_dt(pdev, plat_dat);
 
 	return ret;
 }
@@ -504,7 +500,7 @@ static void socfpga_dwmac_remove(struct platform_device *pdev)
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	struct phylink_pcs *pcs = priv->hw->lynx_pcs;
 
-	stmmac_pltfr_remove(pdev);
+	stmmac_pltfr_remove_no_dt(pdev);
 
 	lynx_pcs_destroy(pcs);
 }