mmc: sunxi: Return error on mmc_regulator_set_ocr() fail in .set_ios op

Let .set_ios() fail if mmc_regulator_set_ocr() fails to enable and set a
proper voltage for vmmc.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index cce5ca5..790f016 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -711,7 +711,10 @@
 		break;
 
 	case MMC_POWER_UP:
-		mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
+		host->ferror = mmc_regulator_set_ocr(mmc, mmc->supply.vmmc,
+						     ios->vdd);
+		if (host->ferror)
+			return;
 
 		host->ferror = sunxi_mmc_init_host(mmc);
 		if (host->ferror)