mmc: mmc_test: Uninitialized return value

We never set "ret" to RESULT_OK.

Fixes: 9f9c4180 ("mmc: mmc_test: add test for non-blocking transfers")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/card/mmc_test.c

@@ -832,7 +832,7 @@ static int mmc_test_nonblock_transfer(struct mmc_test_card *test,
 	struct mmc_async_req *other_areq = &test_areq[1].areq;
 	enum mmc_blk_status status;
 	int i;
-	int ret;
+	int ret = RESULT_OK;
 
 	test_areq[0].test = test;
 	test_areq[1].test = test;