[PATCH net-next] tipc: add missing dev_put() on error in tipc_enable_l2_media

[YueHaibing]

when tipc_own_id failed to obtain node identity,dev_put should
be call before return -EINVAL.

Fixes: 682cd3cf946b ("tipc: confgiure and apply UDP bearer MTU on running 
links")
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 net/tipc/bearer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index fd6d8f1..418f03d 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -395,6 +395,7 @@ int tipc_enable_l2_media(struct net *net, struct 
tipc_bearer *b,
                tipc_net_init(net, node_id, 0);
        }
        if (!tipc_own_id(net)) {
+               dev_put(dev);
                pr_warn("Failed to obtain node identity\n");
                return -EINVAL;
        }
-- 
2.7.0