Properly handle the error in hv_acpi_init().

Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Haiyang Zhang <[email protected]>
Signed-off-by: Hank Janssen <[email protected]>
---
 drivers/staging/hv/vmbus_drv.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index be158be..1c949f5 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -788,7 +788,10 @@ static int __init hv_acpi_init(void)
                return -ENODEV;
        }
 
-       return vmbus_bus_init(irq);
+       ret = vmbus_bus_init(irq);
+       if (ret)
+               acpi_bus_unregister_driver(&vmbus_acpi_driver);
+       return ret;
 }
 
 
-- 
1.7.4.1

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