[PATCH] mmc: sdhci-cadence: Fix a loop in sdhci_cdns_set_tune_val()

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We were supposed to go through this loop twice but there is a missing if
statement so it only loops once.

Fixes: 213fae74318b ("mmc: sdhci-cadence: send tune request twice to work around errata")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
index bc30d1637246..7a343b87b5e5 100644
--- a/drivers/mmc/host/sdhci-cadence.c
+++ b/drivers/mmc/host/sdhci-cadence.c
@@ -274,8 +274,8 @@ static int sdhci_cdns_set_tune_val(struct sdhci_host *host, unsigned int val)
 		ret = readl_poll_timeout(reg, tmp,
 					 !(tmp & SDHCI_CDNS_HRS06_TUNE_UP),
 					 0, 1);
-
-		return ret;
+		if (ret)
+			return ret;
 	}
 
 	return 0;
--
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