rxrpc: Replace conn->trans->{local,peer} with conn->params.{local,peer}

Replace accesses of conn->trans->{local,peer} with
conn->params.{local,peer} thus making it easier for a future commit to
remove the rxrpc_transport struct.

This also reduces the number of memory accesses involved.

Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/net/rxrpc/security.c b/net/rxrpc/security.c
index 40955d0..814d285 100644
--- a/net/rxrpc/security.c
+++ b/net/rxrpc/security.c
@@ -113,7 +113,7 @@
 int rxrpc_init_server_conn_security(struct rxrpc_connection *conn)
 {
 	const struct rxrpc_security *sec;
-	struct rxrpc_local *local = conn->trans->local;
+	struct rxrpc_local *local = conn->params.local;
 	struct rxrpc_sock *rx;
 	struct key *key;
 	key_ref_t kref;