SUNRPC: Make call_status()/call_decode() call xprt_force_disconnect()

Move the calls to xprt_disconnect() over to xprt_force_disconnect() in
order to enable the transport layer to manage the state of the
XPRT_CONNECTED flag.
Ditto in xs_tcp_read_fraghdr().
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

net/sunrpc/clnt.c

@@ -1137,7 +1137,7 @@ call_status(struct rpc_task *task)
 	case -ETIMEDOUT:
 		task->tk_action = call_timeout;
 		if (task->tk_client->cl_discrtry)
-			xprt_disconnect(task->tk_xprt);
+			xprt_force_disconnect(task->tk_xprt);
 		break;
 	case -ECONNREFUSED:
 	case -ENOTCONN:
@@ -1260,7 +1260,7 @@ call_decode(struct rpc_task *task)
 	req->rq_received = req->rq_private_buf.len = 0;
 	task->tk_status = 0;
 	if (task->tk_client->cl_discrtry)
-		xprt_disconnect(task->tk_xprt);
+		xprt_force_disconnect(task->tk_xprt);
 }
 
 /*

net/sunrpc/xprtsock.c

@@ -903,7 +903,7 @@ static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, struct xdr_skb_rea
 	/* Sanity check of the record length */
 	if (unlikely(transport->tcp_reclen < 4)) {
 		dprintk("RPC:       invalid TCP record fragment length\n");
-		xprt_disconnect(xprt);
+		xprt_force_disconnect(xprt);
 		return;
 	}
 	dprintk("RPC:       reading TCP record fragment of length %d\n",