x86, mce: Call put_device on device_register failure

This patch adds a call to put_device() when the device_register() call
has failed. This is required so that the last reference to the device is
given up.

Signed-off-by: Levente Kurusa <levex@linux.com>
Link: http://lkml.kernel.org/r/5298F900.9000208@linux.com
Signed-off-by: Borislav Petkov <bp@suse.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index b3218cdee95f..a389c1d859ec 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2272,8 +2272,10 @@ static int mce_device_create(unsigned int cpu)
         dev->release = &mce_device_release;
 
         err = device_register(dev);
-        if (err)
+        if (err) {
+                put_device(dev);
                 return err;
+        }
 
         for (i = 0; mce_device_attrs[i]; i++) {
                 err = device_create_file(dev, mce_device_attrs[i]);