net: stmmac: dwmac-intel-plat: 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-intel-plat.c

@@ -85,17 +85,15 @@ static int intel_eth_plat_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)) {
 		dev_err(&pdev->dev, "dt configuration failed\n");
 		return PTR_ERR(plat_dat);
 	}
 
 	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
-	if (!dwmac) {
-		ret = -ENOMEM;
-		goto err_remove_config_dt;
-	}
+	if (!dwmac)
+		return -ENOMEM;
 
 	dwmac->dev = &pdev->dev;
 	dwmac->tx_clk = NULL;
@@ -110,10 +108,8 @@ static int intel_eth_plat_probe(struct platform_device *pdev)
 		/* Enable TX clock */
 		if (dwmac->data->tx_clk_en) {
 			dwmac->tx_clk = devm_clk_get(&pdev->dev, "tx_clk");
-			if (IS_ERR(dwmac->tx_clk)) {
-				ret = PTR_ERR(dwmac->tx_clk);
-				goto err_remove_config_dt;
-			}
+			if (IS_ERR(dwmac->tx_clk))
+				return PTR_ERR(dwmac->tx_clk);
 
 			clk_prepare_enable(dwmac->tx_clk);
 
@@ -126,7 +122,7 @@ static int intel_eth_plat_probe(struct platform_device *pdev)
 				if (ret) {
 					dev_err(&pdev->dev,
 						"Failed to set tx_clk\n");
-					goto err_remove_config_dt;
+					return ret;
 				}
 			}
 		}
@@ -140,7 +136,7 @@ static int intel_eth_plat_probe(struct platform_device *pdev)
 			if (ret) {
 				dev_err(&pdev->dev,
 					"Failed to set clk_ptp_ref\n");
-				goto err_remove_config_dt;
+				return ret;
 			}
 		}
 	}
@@ -158,22 +154,17 @@ static int intel_eth_plat_probe(struct platform_device *pdev)
 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 	if (ret) {
 		clk_disable_unprepare(dwmac->tx_clk);
-		goto err_remove_config_dt;
+		return ret;
 	}
 
 	return 0;
-
-err_remove_config_dt:
-	stmmac_remove_config_dt(pdev, plat_dat);
-
-	return ret;
 }
 
 static void intel_eth_plat_remove(struct platform_device *pdev)
 {
 	struct intel_dwmac *dwmac = get_stmmac_bsp_priv(&pdev->dev);
 
-	stmmac_pltfr_remove(pdev);
+	stmmac_pltfr_remove_no_dt(pdev);
 	clk_disable_unprepare(dwmac->tx_clk);
 }