[PATCH] dm thin: Add missing destroy_work_on_stack()

[Yuan Can]

This commit add missed destroy_work_on_stack() operations for pw->worker in
pool_work_wait().

Fixes: e7a3e871d895 ("dm thin: cleanup noflush_work to use a proper completion")
Signed-off-by: Yuan Can <yuan...@huawei.com>
---
 drivers/md/dm-thin.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 89632ce97760..c9f47d0cccf9 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2484,6 +2484,7 @@ static void pool_work_wait(struct pool_work *pw, struct 
pool *pool,
        init_completion(&pw->complete);
        queue_work(pool->wq, &pw->worker);
        wait_for_completion(&pw->complete);
+       destroy_work_on_stack(&pw->worker);
 }
 
 /*----------------------------------------------------------------*/
-- 
2.17.1