drivers: mmc: Avoid memory leak in case of failure

priv pointer should be freed before returning with an error value
from exynos_dwmci_get_config().
Signed-off-by: NSuniel Mahesh <sunil.m@techveda.org>
Signed-off-by: NRaghu Bharadwaj <raghu@techveda.org>

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;
 	}