mmc: core: clear 'doing_init_tune' also after failures

Reorganize the code, so that the flag is always cleared independently of
a good or bad case.

Fixes: 97a7d87e ("mmc: core: add a 'doing_init_tune' flag and a 'mmc_doing_tune' helper")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20200914112845.21855-1-wsa+renesas@sang-engineering.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/core/mmc.c

@@ -1766,14 +1766,14 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 		host->doing_init_tune = 1;
 
 		err = mmc_hs200_tuning(card);
-		if (err)
-			goto free_card;
+		if (!err)
+			err = mmc_select_hs400(card);
+
+		host->doing_init_tune = 0;
 
-		err = mmc_select_hs400(card);
 		if (err)
 			goto free_card;
 
-		host->doing_init_tune = 0;
 	} else if (!mmc_card_hs400es(card)) {
 		/* Select the desired bus width optionally */
 		err = mmc_select_bus_width(card);