Cleanup error handling in vmbus_child_device_register().

Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Haiyang Zhang <[email protected]>
Signed-off-by: Abhishek Kane <[email protected]>
Signed-off-by: Hank Janssen <[email protected]>
---
 drivers/staging/hv/vmbus_drv.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index d597dd4..4d569ad 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -720,11 +720,16 @@ int vmbus_child_device_register(struct hv_device 
*child_device_obj)
         */
        ret = device_register(&child_device_obj->device);
 
+       if (ret)
+               return ret;
+
        /* vmbus_probe() error does not get propergate to device_register(). */
        ret = child_device_obj->probe_error;
 
-       if (ret)
+       if (ret) {
                pr_err("Unable to register child device\n");
+               device_unregister(&child_device_obj->device);
+       }
        else
                pr_info("child device %s registered\n",
                        dev_name(&child_device_obj->device));
-- 
1.7.4.1

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