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: Suniel Mahesh <sunil.m@techveda.org>
Signed-off-by: Raghu Bharadwaj <raghu@techveda.org>
diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
index 5edd383..e40575e 100644
--- a/drivers/mmc/exynos_dw_mmc.c
+++ b/drivers/mmc/exynos_dw_mmc.c
@@ -168,6 +168,7 @@
 
 	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 @@
 	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 @@
 	if (err) {
 		printf("DWMMC%d: Can't get sdr-timings for devider\n",
 				host->dev_index);
+		free(priv);
 		return -EINVAL;
 	}