[PATCH net] vxlan: fix error return code in __vxlan_dev_create()

[Zhang Changzhong]

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 0ce1822c2a08 ("vxlan: add adjacent link to limit depth level")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzh...@huawei.com>
---
 drivers/net/vxlan.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 1a557ae..a506872 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -3877,8 +3877,10 @@ static int __vxlan_dev_create(struct net *net, struct 
net_device *dev,
 
        if (dst->remote_ifindex) {
                remote_dev = __dev_get_by_index(net, dst->remote_ifindex);
-               if (!remote_dev)
+               if (!remote_dev) {
+                       err = -ENODEV;
                        goto errout;
+               }
 
                err = netdev_upper_dev_link(remote_dev, dev, extack);
                if (err)
-- 
2.9.5