ide: remove superfluous BUG_ON() from set_geometry_intr()

ide_set_handler() bugs on ->handler == NULL so no need to do it
in set_geometry_intr().

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

drivers/ide/ide-taskfile.c

@@ -163,7 +163,6 @@ static ide_startstop_t set_geometry_intr(ide_drive_t *drive)
 	if (stat & (ERR_STAT|DRQ_STAT))
 		return ide_error(drive, "set_geometry_intr", stat);
 
-	BUG_ON(HWGROUP(drive)->handler != NULL);
 	ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL);
 	return ide_started;
 }