mmc: add missing space before comment delimiter

Add missing space before a comment delimiter.

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 620bb93..b61ce8d 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -2824,7 +2824,7 @@
 	if (err)
 		return err;
 
-	/* The internal partition reset to user partition(0) at every CMD0*/
+	/* The internal partition reset to user partition(0) at every CMD0 */
 	mmc_get_blk_desc(mmc)->hwpart = 0;
 
 	/* Test for SD version 2 */