mmc: sdhci: Make set_ios_post() return int

Make set_ios_post() return int to faciliate error handling in
platform drivers.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 151e1e3..61cf216 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -584,7 +584,7 @@
 
 	/* If available, call the driver specific "post" set_ios() function */
 	if (host->ops && host->ops->set_ios_post)
-		host->ops->set_ios_post(host);
+		return host->ops->set_ios_post(host);
 
 	return 0;
 }