[U-Boot] [PATCH v2] drivers: mmc: Avoid memory leak in case of failure

[sunil.m at techveda.org]

From: Suniel Mahesh <sunil.m at techveda.org>

priv pointer should be freed before returning with an error value
from exynos_dwmci_get_config().

Signed-off-by: Suniel Mahesh <sunil.m at techveda.org>
Signed-off-by: Raghu Bharadwaj <raghu at techveda.org>
---
Changes for v2:
- rebased on latest u-boot tree (2017.11.rc1)
- patch was accepted long time ago, but not applied to u-boot-mmc,
  please apply.
---
Note:
Tested on latest u-boot mainline tree, no build issues.
---
 drivers/mmc/exynos_dw_mmc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
index 40f7892..84ef2da 100644
--- a/drivers/mmc/exynos_dw_mmc.c
+++ b/drivers/mmc/exynos_dw_mmc.c
@@ -168,6 +168,7 @@ static int exynos_dwmci_get_config(const void *blob, int node,
 
 	if (host->dev_index > 4) {
 		printf("DWMMC%d: Can't get the dev index\n", host->dev_index);
+		free(priv);
 		return -EINVAL;
 	}
 
@@ -178,6 +179,7 @@ static int exynos_dwmci_get_config(const void *blob, int node,
 	base = fdtdec_get_addr(blob, node, "reg");
 	if (!base) {
 		printf("DWMMC%d: Can't get base address\n", host->dev_index);
+		free(priv);
 		return -EINVAL;
 	}
 	host->ioaddr = (void *)base;
@@ -187,6 +189,7 @@ static int exynos_dwmci_get_config(const void *blob, int node,
 	if (err) {
 		printf("DWMMC%d: Can't get sdr-timings for devider\n",
 				host->dev_index);
+		free(priv);
 		return -EINVAL;
 	}
 
-- 
1.9.1