mmc: dw_mmc: Handle DW_MCI_QUIRK_IDMAC_DTO properly

In (1fb5f68a mmc: dw_mmc: Don't loop when handling an interrupt), the
code for handling DW_MCI_QUIRK_IDMAC_DTO became dead code.  Move it to
where it ought to live.

Found by code inspection and compile-tested only--I don't know of any
boards that need DW_MCI_QUIRK_IDMAC_DTO.
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Acked-by: NSeungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/host/dw_mmc.c

@@ -1601,8 +1601,6 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
 
 	pending = mci_readl(host, MINTSTS); /* read-only mask reg */
 
-	if (pending) {
-
 	/*
 	 * DTO fix - version 2.10a and below, and only if internal DMA
 	 * is configured.
@@ -1613,6 +1611,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
 			pending |= SDMMC_INT_DATA_OVER;
 	}
 
+	if (pending) {
 		if (pending & DW_MCI_CMD_ERROR_FLAGS) {
 			mci_writel(host, RINTSTS, DW_MCI_CMD_ERROR_FLAGS);
 			host->cmd_status = pending;