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/bcm2835_sdhci.c b/drivers/mmc/bcm2835_sdhci.c
index c1d8700..cb2bd40 100644
--- a/drivers/mmc/bcm2835_sdhci.c
+++ b/drivers/mmc/bcm2835_sdhci.c
@@ -157,7 +157,7 @@
 	bcm_host = calloc(1, sizeof(*bcm_host));
 	if (!bcm_host) {
 		printf("sdhci_host calloc fail!\n");
-		return 1;
+		return -ENOMEM;
 	}
 
 	/*