net/9p: handle correctly interrupted 9P requests

Currently the 9p code crashes when a operation is interrupted, i.e. for
example when the user presses ^C while reading from a file.

This patch fixes the code that is responsible for interruption and flushing
of 9P operations.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>

diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index 7fa0eb2..ac49900 100644
--- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -295,6 +295,7 @@
 		goto err_out;
 
 	req->rc = c->rc;
+	req->status = REQ_STATUS_RCVD;
 	p9_client_cb(client, req);
 
 	return;