[PATCH AUTOSEL for 4.15 34/78] mmc: block: fix logical error to avoid memory leak

[Sasha Levin]

From: "Liu, Changcheng" <changcheng....@intel.com>

[ 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....@intel.com>
Acked-by: Adrian Hunter <adrian.hun...@intel.com>
Acked-by: Linus Walleij <linus.wall...@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hans...@linaro.org>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
---
 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 ccfa98af1dd3..b737a9540331 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -2623,6 +2623,7 @@ 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