[PATCH AUTOSEL for 4.14 29/67] mmc: block: fix logical error to avoid memory leak

[Sasha Levin]

From: "Liu, Changcheng" <changcheng.liu@xxxxxxxxx>

[ Upstream commit 0be55579a127916ebe39db2a74d906a2dfceed42 ]

If the MMC_DRV_OP_GET_EXT_CSD request completes successfully, then
ext_csd must be freed, but in one case it was not. Fix that.

Signed-off-by: Liu Changcheng <changcheng.liu@xxxxxxxxx>
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 drivers/mmc/core/block.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index ccb516f18d72..9c6f2ce3b710 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -2387,6 +2387,7 @@ static int mmc_ext_csd_open(struct inode *inode, struct file *filp)
 
 	if (n != EXT_CSD_STR_LEN) {
 		err = -EINVAL;
+		kfree(ext_csd);
 		goto out_free;
 	}
 
-- 
2.14.1