rxrpc: Use rxrpc_free_skb() rather than rxrpc_lose_skb()

rxrpc_lose_skb() is now exactly the same as rxrpc_free_skb(), so remove it
and use the latter instead.
Signed-off-by: David Howells <dhowells@redhat.com>

net/rxrpc/ar-internal.h

@@ -1095,7 +1095,6 @@ void rxrpc_new_skb(struct sk_buff *, enum rxrpc_skb_trace);
 void rxrpc_see_skb(struct sk_buff *, enum rxrpc_skb_trace);
 void rxrpc_get_skb(struct sk_buff *, enum rxrpc_skb_trace);
 void rxrpc_free_skb(struct sk_buff *, enum rxrpc_skb_trace);
-void rxrpc_lose_skb(struct sk_buff *, enum rxrpc_skb_trace);
 void rxrpc_purge_queue(struct sk_buff_head *);
 
 /*

net/rxrpc/input.c

@@ -1176,7 +1176,7 @@ void rxrpc_data_ready(struct sock *udp_sk)
 		static int lose;
 		if ((lose++ & 7) == 7) {
 			trace_rxrpc_rx_lose(sp);
-			rxrpc_lose_skb(skb, rxrpc_skb_rx_lost);
+			rxrpc_free_skb(skb, rxrpc_skb_rx_lost);
 			return;
 		}
 	}

net/rxrpc/skbuff.c

@@ -68,21 +68,6 @@ void rxrpc_free_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
 	}
 }
 
-/*
- * Note the injected loss of a socket buffer.
- */
-void rxrpc_lose_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
-{
-	const void *here = __builtin_return_address(0);
-	if (skb) {
-		int n;
-		CHECK_SLAB_OKAY(&skb->users);
-		n = atomic_dec_return(select_skb_count(op));
-		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
-		kfree_skb(skb);
-	}
-}
-
 /*
  * Clear a queue of socket buffers.
  */