net-sysfs: fix netdev_queue_add_kobject() breakage

commit 48a322b6 upstream.

kobject_put() should only be called in error path.

Fixes: b8eb7183 ("net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jouni Hogander <jouni.hogander@unikie.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

net/core/net-sysfs.c

@@ -1484,6 +1484,7 @@ static int netdev_queue_add_kobject(struct net_device *dev, int index)
 #endif
 
 	kobject_uevent(kobj, KOBJ_ADD);
+	return 0;
 
 err:
 	kobject_put(kobj);