6LoWPAN: call dev_put() on error in lowpan_newlink()

We should release the dev_hold() on error before returning here.

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

diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index 5dc04890e0c5fed14357fea2ea51210d7e55841f..f0d15365722ad553b302044f2e0e2a8f00d14989 100644 (file)
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -793,8 +793,11 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev,
        mutex_init(&lowpan_dev_info(dev)->dev_list_mtx);
 
        entry = kzalloc(sizeof(struct lowpan_dev_record), GFP_KERNEL);
-       if (!entry)
+       if (!entry) {
+               dev_put(real_dev);
+               lowpan_dev_info(dev)->real_dev = NULL;
                return -ENOMEM;
+       }
 
        entry->ldev = dev;