net: ethernet: mtk_eth_soc: fix resource leak in error path

In mtk_probe(), when mtk_ppe_init() or mtk_eth_offload_init() failed,
mtk_mdio_cleanup() isn't called. Fix it.

Fixes: ba37b7ca ("net: ethernet: mtk_eth_soc: add support for initializing the PPE")
Fixes: 502e84e2 ("net: ethernet: mtk_eth_soc: add flow offloading support")
Signed-off-by: Yan Cangang <nalanzeyu@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -4147,13 +4147,13 @@ static int mtk_probe(struct platform_device *pdev)
 						   eth->soc->offload_version, i);
 			if (!eth->ppe[i]) {
 				err = -ENOMEM;
-				goto err_free_dev;
+				goto err_deinit_mdio;
 			}
 		}
 
 		err = mtk_eth_offload_init(eth);
 		if (err)
-			goto err_free_dev;
+			goto err_deinit_mdio;
 	}
 
 	for (i = 0; i < MTK_MAX_DEVS; i++) {