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

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

The remove_new() callback 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-sunxi.c

@@ -108,36 +108,31 @@ static int sun7i_gmac_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);
 
 	gmac = devm_kzalloc(dev, sizeof(*gmac), GFP_KERNEL);
-	if (!gmac) {
-		ret = -ENOMEM;
-		goto err_remove_config_dt;
-	}
+	if (!gmac)
+		return -ENOMEM;
 
 	ret = of_get_phy_mode(dev->of_node, &gmac->interface);
 	if (ret && ret != -ENODEV) {
 		dev_err(dev, "Can't get phy-mode\n");
-		goto err_remove_config_dt;
+		return ret;
 	}
 
 	gmac->tx_clk = devm_clk_get(dev, "allwinner_gmac_tx");
 	if (IS_ERR(gmac->tx_clk)) {
 		dev_err(dev, "could not get tx clock\n");
-		ret = PTR_ERR(gmac->tx_clk);
-		goto err_remove_config_dt;
+		return PTR_ERR(gmac->tx_clk);
 	}
 
 	/* Optional regulator for PHY */
 	gmac->regulator = devm_regulator_get_optional(dev, "phy");
 	if (IS_ERR(gmac->regulator)) {
-		if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER) {
-			ret = -EPROBE_DEFER;
-			goto err_remove_config_dt;
-		}
+		if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
 		dev_info(dev, "no regulator found\n");
 		gmac->regulator = NULL;
 	}
@@ -155,7 +150,7 @@ static int sun7i_gmac_probe(struct platform_device *pdev)
 
 	ret = sun7i_gmac_init(pdev, plat_dat->bsp_priv);
 	if (ret)
-		goto err_remove_config_dt;
+		return ret;
 
 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 	if (ret)
@@ -165,8 +160,6 @@ static int sun7i_gmac_probe(struct platform_device *pdev)
 
 err_gmac_exit:
 	sun7i_gmac_exit(pdev, plat_dat->bsp_priv);
-err_remove_config_dt:
-	stmmac_remove_config_dt(pdev, plat_dat);
 
 	return ret;
 }
@@ -179,7 +172,7 @@ MODULE_DEVICE_TABLE(of, sun7i_dwmac_match);
 
 static struct platform_driver sun7i_dwmac_driver = {
 	.probe  = sun7i_gmac_probe,
-	.remove_new = stmmac_pltfr_remove,
+	.remove_new = stmmac_pltfr_remove_no_dt,
 	.driver = {
 		.name           = "sun7i-dwmac",
 		.pm		= &stmmac_pltfr_pm_ops,