macvtap: fix the missing ret value of TUNSETQUEUE

Commit 441ac0fcaadc76ad09771812382345001dd2b813
(macvtap: Convert to using rtnl lock) forget to return what
macvtap_ioctl_set_queue() returns to its caller. This may break multiqueue API
by always falling through to TUNGETFEATURES.

Cc: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 876c72246ae9..0e5492ec753a 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -1107,6 +1107,7 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
                 rtnl_lock();
                 ret = macvtap_ioctl_set_queue(file, u);
                 rtnl_unlock();
+                return ret;
 
         case TUNGETFEATURES:
                 if (put_user(IFF_TAP | IFF_NO_PI | IFF_VNET_HDR |