net: marvell: prestera: add missing destroy_workqueue() in prestera_module_init()

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

Fixes: 4394fbcb ("net: marvell: prestera: handle fib notifications")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220322090236.1439649-1-yangyingliang@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/marvell/prestera/prestera_main.c

@@ -1032,8 +1032,10 @@ static int __init prestera_module_init(void)
 		return -ENOMEM;
 
 	prestera_owq = alloc_ordered_workqueue("prestera_ordered", 0);
-	if (!prestera_owq)
+	if (!prestera_owq) {
+		destroy_workqueue(prestera_wq);
 		return -ENOMEM;
+	}
 
 	return 0;
 }