thermal: sun8i: Use scoped device node handling to simplify error paths

Obtain the device node reference with scoped/cleanup.h to reduce error
handling and make the code a bit simpler.

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20241010-b4-cleanup-h-of-node-put-thermal-v4-6-bfbe29ad81f4@linaro.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/thermal/sun8i_thermal.c b/drivers/thermal/sun8i_thermal.c
index 3203d8bd13a8fc2a9e5a59b3547cefc2440542c6..22674790629a7b549d1ce618998ff51f6553613e 100644 (file)
--- a/drivers/thermal/sun8i_thermal.c
+++ b/drivers/thermal/sun8i_thermal.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/bitmap.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/interrupt.h>
@@ -348,19 +349,18 @@ static void sun8i_ths_reset_control_assert(void *data)
 
 static struct regmap *sun8i_ths_get_sram_regmap(struct device_node *node)
 {
-       struct device_node *sram_node;
        struct platform_device *sram_pdev;
        struct regmap *regmap = NULL;
 
-       sram_node = of_parse_phandle(node, "allwinner,sram", 0);
+       struct device_node *sram_node __free(device_node) =
+               of_parse_phandle(node, "allwinner,sram", 0);
        if (!sram_node)
                return ERR_PTR(-ENODEV);
 
        sram_pdev = of_find_device_by_node(sram_node);
        if (!sram_pdev) {
                /* platform device might not be probed yet */
-               regmap = ERR_PTR(-EPROBE_DEFER);
-               goto out_put_node;
+               return ERR_PTR(-EPROBE_DEFER);
        }
 
        /* If no regmap is found then the other device driver is at fault */
@@ -369,8 +369,7 @@ static struct regmap *sun8i_ths_get_sram_regmap(struct device_node *node)
                regmap = ERR_PTR(-EINVAL);
 
        platform_device_put(sram_pdev);
-out_put_node:
-       of_node_put(sram_node);
+
        return regmap;
 }