driver core: cpu: use put_device() if device_register fail

if device_register() returned an error! Always use put_device()
to give up the reference initialized.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index d21a2d913107..2da998baa75c 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -382,8 +382,10 @@ int register_cpu(struct cpu *cpu, int num)
         if (cpu->hotpluggable)
                 cpu->dev.groups = hotplugable_cpu_attr_groups;
         error = device_register(&cpu->dev);
-        if (error)
+        if (error) {
+                put_device(&cpu->dev);
                 return error;
+        }
 
         per_cpu(cpu_sys_devices, num) = &cpu->dev;
         register_cpu_under_node(num, cpu_to_node(num));