drivers/message/i2o/driver.c: add missing destroy_workqueue() on error in i2o_driver_register()

Add the missing destroy_workqueue() before return from
i2o_driver_register() in the error handling case.

Signed-off-by: Wei Yongjun <[e-mail]>
Acked-by: Kees Cook <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/message/i2o/driver.c

···
 			osm_err("too many drivers registered, increase "
 				"max_drivers\n");
 			spin_unlock_irqrestore(&i2o_drivers_lock, flags);
-			return -EFAULT;
+			rc = -EFAULT;
+			goto out;
 		}
 
 	drv->context = i;
···
 	}
 
 	rc = driver_register(&drv->driver);
-	if (rc) {
-		if (drv->event) {
-			destroy_workqueue(drv->event_queue);
-			drv->event_queue = NULL;
-		}
+	if (rc)
+		goto out;
+
+	return 0;
+out:
+	if (drv->event_queue) {
+		destroy_workqueue(drv->event_queue);
+		drv->event_queue = NULL;
 	}
 
 	return rc;