[NET]: Fix kfree(skb)

Signed-off-by: Patrick McHardy <[e-mail]>
Acked-by: Paul Moore <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/core/skbuff.c

···
 err:
 	while ((skb = segs)) {
 		segs = skb->next;
-		kfree(skb);
+		kfree_skb(skb);
 	}
 	return ERR_PTR(err);
 }

net/dccp/output.c

···
 					 err);
 		} else {
 			dccp_pr_debug("packet discarded\n");
-			kfree(skb);
+			kfree_skb(skb);
 		}
 	}
 }

net/netlabel/netlabel_unlabeled.c

···
 	return 0;
 
 list_failure:
-	kfree(ans_skb);
+	kfree_skb(ans_skb);
 	return ret_val;
 }
 

net/xfrm/xfrm_user.c

···
 
 	x = xfrm_state_lookup(&id->daddr, id->spi, id->proto, id->family);
 	if (x == NULL) {
-		kfree(r_skb);
+		kfree_skb(r_skb);
 		return -ESRCH;
 	}