hv/netvsc: fix handling of fallback to single queue mode

[ Upstream commit 916c5e1413be058d1c1f6e502db350df890730ce ]

The netvsc device may need to fallback to running in single queue
mode if host side only wants to support single queue.

Recent change for handling mtu broke this in setup logic.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 3ffe64f1a641 ("hv_netvsc: split sub-channel setup into async and sync")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index f362cda85425495cea69deb15a210b0de7160b09..fde0cddac71a9be9985d6911f64033af271b5817 100644 (file)
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -1307,6 +1307,7 @@ out:
        /* setting up multiple channels failed */
        net_device->max_chn = 1;
        net_device->num_chn = 1;
+       return 0;
 
 err_dev_remv:
        rndis_filter_device_remove(dev, net_device);