mmc: use the generic error number

Use the generic error number instead of specific error number.
If use the generic error number, it can debug more easier.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/mmc/tegra_mmc.c b/drivers/mmc/tegra_mmc.c
index c9d9432..023ba3c 100644
--- a/drivers/mmc/tegra_mmc.c
+++ b/drivers/mmc/tegra_mmc.c
@@ -9,6 +9,7 @@
 
 #include <bouncebuf.h>
 #include <common.h>
+#include <errno.h>
 #include <asm/gpio.h>
 #include <asm/io.h>
 #ifndef CONFIG_TEGRA186
@@ -216,14 +217,14 @@
 	if (i == retry) {
 		printf("%s: waiting for status update\n", __func__);
 		writel(mask, &host->reg->norintsts);
-		return TIMEOUT;
+		return -ETIMEDOUT;
 	}
 
 	if (mask & TEGRA_MMC_NORINTSTS_CMD_TIMEOUT) {
 		/* Timeout Error */
 		debug("timeout: %08x cmd %d\n", mask, cmd->cmdidx);
 		writel(mask, &host->reg->norintsts);
-		return TIMEOUT;
+		return -ETIMEDOUT;
 	} else if (mask & TEGRA_MMC_NORINTSTS_ERR_INTERRUPT) {
 		/* Error Interrupt */
 		debug("error: %08x cmd %d\n", mask, cmd->cmdidx);
@@ -257,7 +258,7 @@
 			if (i == retry) {
 				printf("%s: card is still busy\n", __func__);
 				writel(mask, &host->reg->norintsts);
-				return TIMEOUT;
+				return -ETIMEDOUT;
 			}
 
 			cmd->response[0] = readl(&host->reg->rspreg0);