netvsc: Set maximum GSO size in the right place

Commit a50af86d "netvsc: reduce maximum GSO size" was wrongly
backported to 4.4-stable.  The maximum size needs to be set before the
net device is registered, in netvsc_probe().
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/hyperv/netvsc_drv.c

@@ -854,7 +854,6 @@ static int netvsc_set_channels(struct net_device *net,
 		}
 		goto recover;
 	}
-	netif_set_gso_max_size(net, NETVSC_GSO_MAX_SIZE);
 
  out:
 	netvsc_open(net);
@@ -1142,6 +1141,7 @@ static int netvsc_probe(struct hv_device *dev,
 	nvdev = hv_get_drvdata(dev);
 	netif_set_real_num_tx_queues(net, nvdev->num_chn);
 	netif_set_real_num_rx_queues(net, nvdev->num_chn);
+	netif_set_gso_max_size(net, NETVSC_GSO_MAX_SIZE);
 
 	ret = register_netdev(net);
 	if (ret != 0) {