RDMA/cxgb3: Start ep timer on a MPA reject

If the consumer rejects the connection we end up under-referencing the
endpoint structure.  The fix is to call iwch_ep_disconnect() instead
of the low level disconnect functions so that the endpoint close timer
is started correctly.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index b21fde8..135f800 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -1687,12 +1687,11 @@
 		return -ECONNRESET;
 	}
 	BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
-	state_set(&ep->com, CLOSING);
 	if (mpa_rev == 0)
 		abort_connection(ep, NULL, GFP_KERNEL);
 	else {
 		err = send_mpa_reject(ep, pdata, pdata_len);
-		err = send_halfclose(ep, GFP_KERNEL);
+		err = iwch_ep_disconnect(ep, 0, GFP_KERNEL);
 	}
 	return 0;
 }