net: ethernet: Fix memleak in ethoc_probe

[ Upstream commit 5d41f9b7ee7a5a5138894f58846a4ffed601498a ]

When mdiobus_register() fails, priv->mdio allocated
by mdiobus_alloc() has not been freed, which leads
to memleak.

Fixes: e7f4dc3536a4 ("mdio: Move allocation of interrupts into core")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201223110615.31389-1-dinghao.liu@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c
index 8bb0db990c8fcf8258201f1af5fcf3fa9976b5f9..e8fc0c55ab04776e50a3e8dc794b18d52a6a63af 100644 (file)
--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -1212,7 +1212,7 @@ static int ethoc_probe(struct platform_device *pdev)
        ret = mdiobus_register(priv->mdio);
        if (ret) {
                dev_err(&netdev->dev, "failed to register MDIO bus\n");
-               goto free2;
+               goto free3;
        }
 
        ret = ethoc_mdio_probe(netdev);
@@ -1244,6 +1244,7 @@ error2:
        netif_napi_del(&priv->napi);
 error:
        mdiobus_unregister(priv->mdio);
+free3:
        mdiobus_free(priv->mdio);
 free2:
        if (priv->clk)