ACPI / dock: fix error return code in dock_add()

Fix to return -ENODEV in the acpi notify handler install error
handling case instead of 0, as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index f601658a4ad2..b527c1bd8bb2 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -881,8 +881,10 @@ static int __init dock_add(acpi_handle handle)
 
         status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
                                              dock_notify_handler, dock_station);
-        if (ACPI_FAILURE(status))
+        if (ACPI_FAILURE(status)) {
+                ret = -ENODEV;
                 goto err_rmgroup;
+        }
 
         dock_station_count++;
         list_add(&dock_station->sibling, &dock_stations);