[PATCH] mmc: mmc: fix switch to 1V8 for hs400es mode

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Change the default err value to -EINVAL, otherwise signal voltage
will not change to 1V8 if card or controller only support 1V8 for
HS400ES mode.

Fixes: commit 1720d3545b77 ("mmc: core: switch to 1V8 or 1V2 for hs400es mode")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
---
 drivers/mmc/core/mmc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 92c6167..336a950 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1289,7 +1289,7 @@ int mmc_hs400_to_hs200(struct mmc_card *card)
 static int mmc_select_hs400es(struct mmc_card *card)
 {
 	struct mmc_host *host = card->host;
-	int err = 0;
+	int err = -EINVAL;
 	u8 val;
 
 	if (!(host->caps & MMC_CAP_8_BIT_DATA)) {
-- 
1.9.1

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