net: stmmac: selftests: fix potential memleak in stmmac_test_arpoffload()

[ Upstream commit f150b63f3fa5fdd81e0dd6151e8850268e29438c ]

The skb allocated by stmmac_test_get_arp_skb() hasn't been released in
some error handling case, which will lead to a memory leak. Fix this up
by adding kfree_skb() to release skb.

Compile tested only.

Fixes: 5e3fb0a6e2b3 ("net: stmmac: selftests: Implement the ARP Offload test")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index 49af7e7..687f43c 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -1654,12 +1654,16 @@ static int stmmac_test_arpoffload(struct stmmac_priv *priv)
        }
 
        ret = stmmac_set_arp_offload(priv, priv->hw, true, ip_addr);
-       if (ret)
+       if (ret) {
+               kfree_skb(skb);
                goto cleanup;
+       }
 
        ret = dev_set_promiscuity(priv->dev, 1);
-       if (ret)
+       if (ret) {
+               kfree_skb(skb);
                goto cleanup;
+       }
 
        ret = dev_direct_xmit(skb, 0);
        if (ret)