[PATCH] PCI: fix double put_device() in error case in pci_create_root_bus()

[Yang Yingliang <yangyingliang@huawei.com>]

If device_add() fails in pci_register_host_bridge(), the bridge device will
be put once, and it will be put again in error path of pci_create_root_bus().
Fix this by removing put_device() after device_add() is failed.

Fixes: 37d6a0a6f470 ("PCI: Add pci_register_host_bridge() interface")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 drivers/pci/probe.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index b66fa42c4b1f..f61754d76aa7 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -926,10 +926,8 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge)
 	/* Temporarily move resources off the list */
 	list_splice_init(&bridge->windows, &resources);
 	err = device_add(&bridge->dev);
-	if (err) {
-		put_device(&bridge->dev);
+	if (err)
 		goto free;
-	}
 	bus->bridge = get_device(&bridge->dev);
 	device_enable_async_suspend(bus->bridge);
 	pci_set_bus_of_node(bus);
-- 
2.25.1