[NET]: Fix kfree(skb)

Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 924a2fe..956cfe0 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1401,7 +1401,7 @@
 
 	x = xfrm_state_lookup(&id->daddr, id->spi, id->proto, id->family);
 	if (x == NULL) {
-		kfree(r_skb);
+		kfree_skb(r_skb);
 		return -ESRCH;
 	}