SUNRPC: Refactor xprt_request_wait_receive()

Convert the transport callback to actually put the request to sleep
instead of just setting a timeout. This is in preparation for
rpc_sleep_on_timeout().

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 5d26135..7e73abe 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -815,7 +815,7 @@ static const struct rpc_xprt_ops xprt_rdma_procs = {
 	.alloc_slot		= xprt_rdma_alloc_slot,
 	.free_slot		= xprt_rdma_free_slot,
 	.release_request	= xprt_release_rqst_cong,       /* ditto */
-	.set_retrans_timeout	= xprt_set_retrans_timeout_def, /* ditto */
+	.wait_for_reply_request	= xprt_wait_for_reply_request_def, /* ditto */
 	.timer			= xprt_rdma_timer,
 	.rpcbind		= rpcb_getport_async,	/* sunrpc/rpcb_clnt.c */
 	.set_port		= xprt_rdma_set_port,