mmc: sdhci: further code simplication

Further simplify the code in sdhci_prepare_data() - we don't set
SDHCI_REQ_USE_DMA anywhere else in the driver, so there is no
need to set it, and then immediately test it.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci.c

@@ -725,7 +725,11 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
 	host->data_early = 0;
 	host->data->bytes_xfered = 0;
 
-	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))
+	if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
+		struct scatterlist *sg;
+		unsigned int length_mask, offset_mask;
+		int i;
+
 		host->flags |= SDHCI_REQ_USE_DMA;
 
 		/*
@@ -735,11 +739,6 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
 		 * The assumption here being that alignment and lengths are
 		 * the same after DMA mapping to device address space.
 		 */
-	if (host->flags & SDHCI_REQ_USE_DMA) {
-		struct scatterlist *sg;
-		unsigned int length_mask, offset_mask;
-		int i;
-
 		length_mask = 0;
 		offset_mask = 0;
 		if (host->flags & SDHCI_USE_ADMA) {