mmc: sdhci: fix __sdhci_adma_write_desc

If hosts provides ops->adma_write_desc, we should not fall back to the
general sdhci_adma_write_desc().

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci.c

@@ -649,8 +649,8 @@ static inline void __sdhci_adma_write_desc(struct sdhci_host *host,
 {
 	if (host->ops->adma_write_desc)
 		host->ops->adma_write_desc(host, desc, addr, len, cmd);
-
-	sdhci_adma_write_desc(host, desc, addr, len, cmd);
+	else
+		sdhci_adma_write_desc(host, desc, addr, len, cmd);
 }
 
 static void sdhci_adma_mark_end(void *desc)