[VLAN] net/8021q/vlanproc.c: fix check-after-use

The Coverity checker spotted that we'd have already oops'ed if
"vlandev" was NULL.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index c0040c9..bd08aa0 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -319,7 +319,7 @@
 	static const char fmt[] = "%30s %12lu\n";
 	int i;
 
-	if ((vlandev == NULL) || (!(vlandev->priv_flags & IFF_802_1Q_VLAN)))
+	if (!(vlandev->priv_flags & IFF_802_1Q_VLAN))
 		return 0;
 
 	seq_printf(seq, "%s  VID: %d	 REORDER_HDR: %i  dev->priv_flags: %hx\n",