staging: vchiq_core: don't add a wmb() before remote_event_signal()

It's the first thing remote_event_signal() does.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c

@@ -1137,9 +1137,6 @@ queue_message_sync(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
 			size);
 	}
 
-	/* Make sure the new header is visible to the peer. */
-	wmb();
-
 	remote_event_signal(&state->remote->sync_trigger);
 
 	if (VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_PAUSE)
@@ -3269,7 +3266,6 @@ static void
 release_message_sync(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header)
 {
 	header->msgid = VCHIQ_MSGID_PADDING;
-	wmb();
 	remote_event_signal(&state->remote->sync_release);
 }