[PATCH 4.19 22/77] net: ethernet: Fix memleak in ethoc_probe

[Greg Kroah-Hartman]

From: Dinghao Liu <dinghao.liu@xxxxxxxxxx>

[ 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@xxxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Link: https://lore.kernel.org/r/20201223110615.31389-1-dinghao.liu@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/ethernet/ethoc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -1213,7 +1213,7 @@ static int ethoc_probe(struct platform_d
 	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);
@@ -1245,6 +1245,7 @@ error2:
 	netif_napi_del(&priv->napi);
 error:
 	mdiobus_unregister(priv->mdio);
+free3:
 	mdiobus_free(priv->mdio);
 free2:
 	clk_disable_unprepare(priv->clk);