[IPV4]: ip_finish_output() can be inlined

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/ip_output.c

@@ -200,7 +200,7 @@ static inline int ip_finish_output2(struct sk_buff *skb)
 	return -EINVAL;
 }
 
-static int ip_finish_output(struct sk_buff *skb)
+static inline int ip_finish_output(struct sk_buff *skb)
 {
 	struct net_device *dev = skb->dst->dev;