vlan: unnecessary to check if vlan_pcpu_stats is NULL

if allocating memory for vlan_pcpu_stats failed, the device can not be operated
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/8021q/vlan_dev.c

@@ -706,8 +706,6 @@ static void vlan_ethtool_get_drvinfo(struct net_device *dev,
 
 static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
 {
-
-	if (vlan_dev_priv(dev)->vlan_pcpu_stats) {
 	struct vlan_pcpu_stats *p;
 	u32 rx_errors = 0, tx_dropped = 0;
 	int i;
@@ -737,7 +735,7 @@ static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, st
 	}
 	stats->rx_errors  = rx_errors;
 	stats->tx_dropped = tx_dropped;
-	}
+
 	return stats;
 }