AOSCOS: net: stmmac: Make phytium_dwmac_remove() return void

Fixes: 731b13ef92e8 ("BACKPORT: PHYTIUM: net/stmmac: Add phytium DWMAC driver support v2")
Fixes: 0edb555 ("platform: Make platform_driver::remove() return void")
Signed-off-by: Kexy Biscuit <kexybiscuit@aosc.io>

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

@@ -176,16 +176,14 @@ static int phytium_dwmac_probe(struct platform_device *pdev)
 	return  stmmac_dvr_probe(&pdev->dev, plat, &stmmac_res);
 }
 
-static int phytium_dwmac_remove(struct platform_device *pdev)
+static void phytium_dwmac_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	struct plat_stmmacenet_data *plat = priv->plat;
 
 	stmmac_pltfr_remove(pdev);
 	clk_unregister_fixed_rate(plat->stmmac_clk);
-
-	return 0;
 }
 
 #ifdef CONFIG_OF