[NET]: Use the skb_set_queue_mapping where appropriate

There's already such a helper to initialize this field.  Use it.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index 38b03da..1672cc1 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1661,7 +1661,7 @@
 		q = dev->qdisc;
 		if (q->enqueue) {
 			/* reset queue_mapping to zero */
-			skb->queue_mapping = 0;
+			skb_set_queue_mapping(skb, 0);
 			rc = q->enqueue(skb, q);
 			qdisc_run(dev);
 			spin_unlock(&dev->queue_lock);