xen: xenbus: use put_device() instead of kfree()

Never directly free @dev after calling device_register(), even
if it returned an error! Always use put_device() to give up the
reference initialized.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index 74888cacd0b0..ec9eb4fba59c 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -466,8 +466,11 @@ int xenbus_probe_node(struct xen_bus_type *bus,
 
         /* Register with generic device framework. */
         err = device_register(&xendev->dev);
-        if (err)
+        if (err) {
+                put_device(&xendev->dev);
+                xendev = NULL;
                 goto fail;
+        }
 
         return 0;
 fail: