get_device(&shost->shost_gendev) is called in scsi_add_host_with_dma(),
but its counter pair isn't called in the failure path, so fix it
by calling put_device(&shost->shost_gendev) in its failure path.

Reported-by: John Garry <redacted>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Ming Lei <redacted>
---
 drivers/scsi/hosts.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index ea50856cb203..492b64f349e1 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c

@@ -295,6 +295,7 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev,
 	 * scsi_host_dev_release, so not free them in the failure path
 	 */
  out_del_dev:
+	put_device(&shost->shost_gendev);
 	device_del(&shost->shost_dev);
  out_del_gendev:
 	device_del(&shost->shost_gendev);

-- 
2.29.2