firmware: arm_scpi: add missing of_node_put after calling of_parse_phandle

of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using it.

Besides, of_address_to_resource always returns -EINVAL for error, delete
the assignment for ret.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

diff --git a/drivers/firmware/arm_scpi.c b/drivers/firmware/arm_scpi.c
index 4388937..ce2bc2a 100644 (file)
--- a/drivers/firmware/arm_scpi.c
+++ b/drivers/firmware/arm_scpi.c
@@ -709,9 +709,10 @@ static int scpi_probe(struct platform_device *pdev)
                struct mbox_client *cl = &pchan->cl;
                struct device_node *shmem = of_parse_phandle(np, "shmem", idx);
 
-               if (of_address_to_resource(shmem, 0, &res)) {
+               ret = of_address_to_resource(shmem, 0, &res);
+               of_node_put(shmem);
+               if (ret) {
                        dev_err(dev, "failed to get SCPI payload mem resource\n");
-                       ret = -EINVAL;
                        goto err;
                }