diff --git a/net/dsa/tag_sja1105.c b/net/dsa/tag_sja1105.c
index 7639ccb94d35..35a6346549f2 100644
--- a/net/dsa/tag_sja1105.c
+++ b/net/dsa/tag_sja1105.c
@@ -652,12 +652,12 @@ static struct sk_buff *sja1110_rcv(struct sk_buff *skb,
 	if (likely(sja1105_skb_has_tag_8021q(skb)))
 		dsa_8021q_rcv(skb, &source_port, &switch_id, &vbid, &vid);
 
-	if (vbid >= 1)
-		skb->dev = dsa_tag_8021q_find_port_by_vbid(netdev, vbid);
-	else if (source_port == -1 || switch_id == -1)
-		skb->dev = dsa_find_designated_bridge_port_by_vid(netdev, vid);
-	else
+	if (source_port != -1 && switch_id != -1)
 		skb->dev = dsa_conduit_find_user(netdev, switch_id, source_port);
+	else if (vbid >= 1)
+		skb->dev = dsa_tag_8021q_find_port_by_vbid(netdev, vbid);
+	else
+		skb->dev = dsa_find_designated_bridge_port_by_vid(netdev, vid);
 	if (!skb->dev) {
 		netdev_warn(netdev, "Couldn't decode source port\n");
 		return NULL;