diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 142ebac141764b5deffdbde15c3c6510d6e4d770..b1b3b0fbf41c1b168c67f7ebdf93e3c8f9e32cf5 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -432,6 +432,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 	br_fdb_delete_by_port(br, p, 1);
 err1:
 	kobject_put(&p->kobj);
+	p = NULL; /* kobject_put frees */
 err0:
 	dev_set_promiscuity(dev, -1);
 put_back: