[PATCH] cpuidle: big.LITTLE: add of_node_put()

[Yangtao Li]

use of_node_put() to release the refcount.

Signed-off-by: Yangtao Li <tiny.win...@gmail.com>
---
 drivers/cpuidle/cpuidle-big_little.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/cpuidle/cpuidle-big_little.c 
b/drivers/cpuidle/cpuidle-big_little.c
index db2ede565f1a..a3b8bc09bac8 100644
--- a/drivers/cpuidle/cpuidle-big_little.c
+++ b/drivers/cpuidle/cpuidle-big_little.c
@@ -174,8 +174,10 @@ static int __init bl_idle_init(void)
        /*
         * Initialize the driver just for a compliant set of machines
         */
-       if (!of_match_node(compatible_machine_match, root))
-               return -ENODEV;
+       if (!of_match_node(compatible_machine_match, root)){
+               ret = -ENODEV;
+               goto out_release_node;
+       }
 
        if (!mcpm_is_available())
                return -EUNATCH;
@@ -222,6 +224,8 @@ static int __init bl_idle_init(void)
        kfree(bl_idle_big_driver.cpumask);
 out_uninit_little:
        kfree(bl_idle_little_driver.cpumask);
+out_release_node:
+       of_node_put(root);
 
        return ret;
 }
-- 
2.17.0