diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index 759714ed6be..abad0b49bd7 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -795,7 +795,7 @@ static int mmc_test_nonblock_transfer(struct mmc_test_card *test,
 	struct mmc_async_req *cur_areq = &test_areq[0].areq;
 	struct mmc_async_req *other_areq = &test_areq[1].areq;
 	int i;
-	int ret;
+	int ret = RESULT_OK;
 
 	test_areq[0].test = test;
 	test_areq[1].test = test;