rtnetlink: unlock on error path in netlink_dump()

In c7ac8679bec939 "rtnetlink: Compute and store minimum ifinfo dump
size", we moved the allocation under the lock so we need to unlock
on error path.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>

1 files changed, 1 insertions, 2 deletions

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 0b92f75491b1..ca5276c51804 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1676,7 +1676,7 @@ static int netlink_dump(struct sock *sk)
 
         skb = sock_rmalloc(sk, alloc_size, 0, GFP_KERNEL);
         if (!skb)
-                goto errout;
+                goto errout_skb;
 
         len = cb->dump(skb, cb);
 
@@ -1716,7 +1716,6 @@ static int netlink_dump(struct sock *sk)
 errout_skb:
         mutex_unlock(nlk->cb_mutex);
         kfree_skb(skb);
-errout:
         return err;
 }