soc: qcom: aoss: Fix refcount leak in qmp_cooling_devices_register

[ Upstream commit e6e0951414a314e7db3e9e24fd924b3e15515288 ]

Every iteration of for_each_available_child_of_node() decrements
the reference count of the previous node.
When breaking early from a for_each_available_child_of_node() loop,
we need to explicitly call of_node_put() on the child node.
Add missing of_node_put() to avoid refcount leak.

Fixes: 05589b30b21a ("soc: qcom: Extend AOSS QMP driver to support resources that are used to wake up the SoC.")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220606064252.42595-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c
index 8583c1e..3973acc 100644 (file)
--- a/drivers/soc/qcom/qcom_aoss.c
+++ b/drivers/soc/qcom/qcom_aoss.c
@@ -499,8 +499,10 @@ static int qmp_cooling_devices_register(struct qmp *qmp)
                        continue;
                ret = qmp_cooling_device_add(qmp, &qmp->cooling_devs[count++],
                                             child);
-               if (ret)
+               if (ret) {
+                       of_node_put(child);
                        goto unroll;
+               }
        }
 
        if (!count)