target: make queue_tm_rsp() return void

The return value wasn't checked by any of the callers.  Assuming this is
correct behaviour, we can simplify some code by not bothering to
generate it.

nab: Add srpt_queue_data_in() + srpt_queue_tm_rsp() nops around
     srpt_queue_response() void return

Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 1e5e820..b351938 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -528,9 +528,9 @@
 	return 0;
 }
 
-static int tcm_vhost_queue_tm_rsp(struct se_cmd *se_cmd)
+static void tcm_vhost_queue_tm_rsp(struct se_cmd *se_cmd)
 {
-	return 0;
+	return;
 }
 
 static void tcm_vhost_free_evt(struct vhost_scsi *vs, struct tcm_vhost_evt *evt)