block/swim: Remove extra put_disk() call from error path

Cc: Laurent Vivier <lvivier@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: stable@vger.kernel.org # v4.14+
Fixes: 103db8b2 ("[PATCH] swim: stop sharing request queue across multiple gendisks")
Tested-by: NStan Johnson <userm57@yahoo.com>
Signed-off-by: NFinn Thain <fthain@telegraphics.com.au>
Acked-by: NLaurent Vivier <lvivier@redhat.com>
Reviewed-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

drivers/block/swim.c

@@ -861,7 +861,6 @@ static int swim_floppy_init(struct swim_priv *swd)
 							      &swd->lock);
 		if (!swd->unit[drive].disk->queue) {
 			err = -ENOMEM;
-			put_disk(swd->unit[drive].disk);
 			goto exit_put_disks;
 		}
 		blk_queue_bounce_limit(swd->unit[drive].disk->queue,