s390/dasd: drop unexpected word 'for' in comments

there is an unexpected word 'for' in the comments that need to be dropped

file - drivers/s390/block/dasd.c
line - 1728

	/* check for for attention message */

changed to:

	/* check for attention message */
Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Link: https://lore.kernel.org/r/20220623102114.33249-1-jiangjian@cdjrlc.comSigned-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://lore.kernel.org/r/20220804213926.3361574-2-sth@linux.ibm.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

drivers/s390/block/dasd.c

@@ -1725,7 +1725,7 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
 		dasd_put_device(device);
 	}
 
-	/* check for for attention message */
+	/* check for attention message */
 	if (scsw_dstat(&irb->scsw) & DEV_STAT_ATTENTION) {
 		device = dasd_device_from_cdev_locked(cdev);
 		if (!IS_ERR(device)) {