net-next: treewide use is_vlan_dev() helper function.

This patch makes use of is_vlan_dev() function instead of flag
comparison which is exactly done by is_vlan_dev() helper function.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Jon Maxwell <jmaxwell37@gmail.com>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Acked-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 3e70a9c..4eb5a80 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -2467,14 +2467,12 @@ static int iboe_tos_to_sl(struct net_device *ndev, int tos)
 	struct net_device *dev;
 
 	prio = rt_tos2priority(tos);
-	dev = ndev->priv_flags & IFF_802_1Q_VLAN ?
-		vlan_dev_real_dev(ndev) : ndev;
-
+	dev = is_vlan_dev(ndev) ? vlan_dev_real_dev(ndev) : ndev;
 	if (dev->num_tc)
 		return netdev_get_prio_tc_map(dev, prio);
 
 #if IS_ENABLED(CONFIG_VLAN_8021Q)
-	if (ndev->priv_flags & IFF_802_1Q_VLAN)
+	if (is_vlan_dev(ndev))
 		return (vlan_dev_get_egress_qos_mask(ndev, prio) &
 			VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
 #endif