staging: unisys: remove incorrect error handling after queue_delayed_work

The queue_delayed_work() return false if the work is
already on the queue, true otherwise.
So return value cannot be less than zero.
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/visorchipset/visorchipset_main.c

@@ -2054,11 +2054,8 @@ controlvm_periodic_work(struct work_struct *work)
 		}
 	}
 
-	if (queue_delayed_work(Periodic_controlvm_workqueue,
-			       &Periodic_controlvm_work, Poll_jiffies) < 0) {
-		LOGERR("queue_delayed_work failed!");
-		POSTCODE_LINUX_2(QUEUE_DELAYED_WORK_PC, POSTCODE_SEVERITY_ERR);
-	}
+	queue_delayed_work(Periodic_controlvm_workqueue,
+			   &Periodic_controlvm_work, Poll_jiffies);
 }
 
 static void
@@ -2192,11 +2189,8 @@ setup_crash_devices_work_queue(struct work_struct *work)
 
 	Poll_jiffies = POLLJIFFIES_CONTROLVMCHANNEL_SLOW;
 
-	if (queue_delayed_work(Periodic_controlvm_workqueue,
-			       &Periodic_controlvm_work, Poll_jiffies) < 0) {
-		LOGERR("queue_delayed_work failed!");
-		POSTCODE_LINUX_2(QUEUE_DELAYED_WORK_PC, POSTCODE_SEVERITY_ERR);
-	}
+	queue_delayed_work(Periodic_controlvm_workqueue,
+			   &Periodic_controlvm_work, Poll_jiffies);
 }
 
 static void