mmc: sdhci: use the generic error number

Use the generic error number instead of meaningless value.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mmc/ftsdc021_sdhci.c b/drivers/mmc/ftsdc021_sdhci.c
index 1f6cdba..6e9fefa 100644
--- a/drivers/mmc/ftsdc021_sdhci.c
+++ b/drivers/mmc/ftsdc021_sdhci.c
@@ -21,7 +21,7 @@
 	host = calloc(1, sizeof(struct sdhci_host));
 	if (!host) {
 		puts("sdh_host malloc fail!\n");
-		return 1;
+		return -ENOMEM;
 	}
 
 	host->name = "FTSDC021";