ide-cd: unify moving to the next buffer in cdrom_rw_intr()

Use the fact that for the first loop rq->current_nr_sectors is always
set and unify moving to the next buffer for read/write requests.

There should be no functionality changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-cd.c

@@ -1302,13 +1302,6 @@ static ide_startstop_t cdrom_rw_intr(ide_drive_t *drive)
 	while (sectors_to_transfer > 0) {
 		int this_transfer;
 
-		/*
-		 * If we've filled the present buffer but there's another
-		 * chained buffer after it, move on.
-		 */
-		if (!write && rq->current_nr_sectors == 0 && rq->nr_sectors)
-			cdrom_end_request(drive, 1);
-
 		if (!rq->current_nr_sectors) {
 			if (!write)
 				/*
@@ -1342,7 +1335,7 @@ static ide_startstop_t cdrom_rw_intr(ide_drive_t *drive)
 		/*
 		 * current buffer complete, move on
 		 */
-		if (write && rq->current_nr_sectors == 0 && rq->nr_sectors)
+		if (rq->current_nr_sectors == 0 && rq->nr_sectors)
 			cdrom_end_request(drive, 1);
 	}