rxrpc: Fix switched parameters in peer tracing

Fix the switched parameters on rxrpc_alloc_peer() and rxrpc_get_peer().
The ref argument and the why argument got mixed.

Fixes: 47c810a7 ("rxrpc: trace: Don't use __builtin_return_address for rxrpc_peer tracing")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: David S. Miller <davem@davemloft.net>

include/trace/events/rxrpc.h

@@ -471,7 +471,7 @@ TRACE_EVENT(rxrpc_peer,
 	    TP_STRUCT__entry(
 		    __field(unsigned int,	peer		)
 		    __field(int,		ref		)
-		    __field(int,		why		)
+		    __field(enum rxrpc_peer_trace, why		)
 			     ),
 
 	    TP_fast_assign(

net/rxrpc/peer_object.c

@@ -226,7 +226,7 @@ struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *local, gfp_t gfp,
 		rxrpc_peer_init_rtt(peer);
 
 		peer->cong_ssthresh = RXRPC_TX_MAX_WINDOW;
-		trace_rxrpc_peer(peer->debug_id, why, 1);
+		trace_rxrpc_peer(peer->debug_id, 1, why);
 	}
 
 	_leave(" = %p", peer);
@@ -382,7 +382,7 @@ struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *peer, enum rxrpc_peer_trace
 	int r;
 
 	__refcount_inc(&peer->ref, &r);
-	trace_rxrpc_peer(peer->debug_id, why, r + 1);
+	trace_rxrpc_peer(peer->debug_id, r + 1, why);
 	return peer;
 }