ieee1394: eth1394: fix lock imbalance

bad_proto can be reached from points which did not take priv->lock.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/ieee1394/eth1394.c

@@ -1220,23 +1220,19 @@ static int ether1394_data_handler(struct net_device *dev, int srcid, int destid,
 		priv->stats.rx_errors++;
 		priv->stats.rx_dropped++;
 		dev_kfree_skb_any(skb);
-		goto bad_proto;
-	}
-
-	if (netif_rx(skb) == NET_RX_DROP) {
+	} else if (netif_rx(skb) == NET_RX_DROP) {
 		priv->stats.rx_errors++;
 		priv->stats.rx_dropped++;
-		goto bad_proto;
-	}
-
-	/* Statistics */
+	} else {
 		priv->stats.rx_packets++;
 		priv->stats.rx_bytes += skb->len;
+	}
+
+	spin_unlock_irqrestore(&priv->lock, flags);
 
 bad_proto:
 	if (netif_queue_stopped(dev))
 		netif_wake_queue(dev);
-	spin_unlock_irqrestore(&priv->lock, flags);
 
 	dev->last_rx = jiffies;