can: Network Drop Monitor: Make use of consume_skb() in af_can.c

Since commit ead2ceb0 ("Network Drop
Monitor: Adding kfree_skb_clean for non-drops and modifying
end-of-line points for skbs") so called end-of-line points for skb's
should use consume_skb() to free the socket buffer.

In opposite to consume_skb() the function kfree_skb() is intended to
be used for unexpected skb drops e.g. in error conditions that now can
trigger the network drop monitor if enabled.

This patch moves the skb end-of-line point in af_can.c to use
consume_skb().
Signed-off-by: NOliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/can/af_can.c

@@ -674,8 +674,8 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev,
 
 	rcu_read_unlock();
 
-	/* free the skbuff allocated by the netdevice driver */
-	kfree_skb(skb);
+	/* consume the skbuff allocated by the netdevice driver */
+	consume_skb(skb);
 
 	if (matches > 0) {
 		can_stats.matches++;