pmdomain: ti: omap_prm: Fix a reference leak on device node

[ Upstream commit 44c28e1 ]

When calling of_parse_phandle_with_args(), the caller is responsible
to call of_node_put() to release the reference of device node.
In omap_prm_domain_attach_dev, it does not release the reference.

Fixes: 58cbff0 ("soc: ti: omap-prm: Add basic power domain support")
Signed-off-by: Felix Gu <gu_0233@qq.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Felix Gu

drivers/pmdomain/ti/omap_prm.c

@@ -651,6 +651,7 @@ static int omap_prm_domain_attach_dev(struct generic_pm_domain *domain,
 	if (pd_args.args_count != 0)
 		dev_warn(dev, "%s: unusupported #power-domain-cells: %i\n",
 			 prmd->pd.name, pd_args.args_count);
+	of_node_put(pd_args.np);
 
 	genpd_data = dev_gpd_data(dev);
 	genpd_data->data = NULL;