[PATCH net-next] tipc: fix error handling in tipc_udp_enable()

-----Original Message-----
From: Wei Yongjun [mailto:weiyongjun1@huawei.com]
Sent: Monday, March 26, 2018 10:33
To: Jon Maloy <redacted>; Ying Xue
[off-list ref]
Cc: Wei Yongjun <redacted>; netdev@vger.kernel.org;
tipc-discussion@lists.sourceforge.net; kernel-janitors@vger.kernel.org
Subject: [PATCH net-next] tipc: fix error handling in tipc_udp_enable()

Release alloced resource before return from the error handling case in
tipc_udp_enable(), otherwise will cause memory leak.

Fixes: 52dfae5c85a4 ("tipc: obtain node identity from interface by default")
Signed-off-by: Wei Yongjun <redacted>
---
 net/tipc/udp_media.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index

2c13b18..e7d91f5 100644

--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c

@@ -687,7 +687,8 @@ static int tipc_udp_enable(struct net *net, struct

tipc_bearer *b,
 	}
 	if (!tipc_own_id(net)) {
 		pr_warn("Failed to set node id, please configure
manually\n");
-		return -EINVAL;
+		err = -EINVAL;
+		goto err;
 	}

 	b->bcast_addr.media_id = TIPC_MEDIA_TYPE_UDP;