[PATCH net-next] rtnetlink: fix error code in rtnl_newlink()

[Dan Carpenter]

If rtnl_get_peer_net() fails, then propagate the error code.  Don't
return success.

Fixes: 48327566769a ("rtnetlink: fix double call of rtnl_link_get_net_ifla()")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 net/core/rtnetlink.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index ab5f201bf0ab..ebcfc2debf1a 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3972,8 +3972,10 @@ static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 		if (ops->peer_type) {
 			peer_net = rtnl_get_peer_net(ops, data, extack);
-			if (IS_ERR(peer_net))
+			if (IS_ERR(peer_net)) {
+				ret = PTR_ERR(peer_net);
 				goto put_ops;
+			}
 			if (peer_net)
 				rtnl_nets_add(&rtnl_nets, peer_net);
 		}
-- 
2.45.2