[PATCH v3 2/2] platform/x86: asus-armoury: use cleanup.h to manage tunables

[Marco Scardovi <scardracs@disroot.org>]

Convert init_rog_tunables() to use the cleanup infrastructure to
automatically free ac_rog_tunables if dc_rog_tunables allocation fails.

By declaring local pointers with the __free(kfree) attribute, the
manual kfree() in the error path can be removed. Upon successful
initialization, the ownership is transferred to the global struct
using no_free_ptr().

Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Marco Scardovi <scardracs@disroot.org>
---
 drivers/platform/x86/asus-armoury.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/platform/x86/asus-armoury.c b/drivers/platform/x86/asus-armoury.c
index ea53a005bb25..5af4a79a61b4 100644
--- a/drivers/platform/x86/asus-armoury.c
+++ b/drivers/platform/x86/asus-armoury.c
@@ -16,6 +16,7 @@
 #include <linux/acpi.h>
 #include <linux/array_size.h>
 #include <linux/bitfield.h>
+#include <linux/cleanup.h>
 #include <linux/device.h>
 #include <linux/dmi.h>
 #include <linux/err.h>
@@ -992,7 +993,8 @@ static int asus_fw_attr_add(void)
 static int init_rog_tunables(void)
 {
 	const struct power_limits *ac_limits, *dc_limits;
-	struct rog_tunables *ac_rog_tunables = NULL, *dc_rog_tunables = NULL;
+	struct rog_tunables *ac_rog_tunables __free(kfree) = NULL;
+	struct rog_tunables *dc_rog_tunables __free(kfree) = NULL;
 	const struct power_data *power_data;
 	const struct dmi_system_id *dmi_id;
 
@@ -1060,10 +1062,8 @@ static int init_rog_tunables(void)
 	dc_limits = power_data->dc_data;
 	if (dc_limits) {
 		dc_rog_tunables = kzalloc_obj(*dc_rog_tunables);
-		if (!dc_rog_tunables) {
-			kfree(ac_rog_tunables);
+		if (!dc_rog_tunables)
 			return -ENOMEM;
-		}
 
 		dc_rog_tunables->power_limits = dc_limits;
 
@@ -1104,8 +1104,8 @@ static int init_rog_tunables(void)
 		pr_debug("No DC PPT limits defined\n");
 	}
 
-	asus_armoury.rog_tunables[ASUS_ROG_TUNABLE_AC] = ac_rog_tunables;
-	asus_armoury.rog_tunables[ASUS_ROG_TUNABLE_DC] = dc_rog_tunables;
+	asus_armoury.rog_tunables[ASUS_ROG_TUNABLE_AC] = no_free_ptr(ac_rog_tunables);
+	asus_armoury.rog_tunables[ASUS_ROG_TUNABLE_DC] = no_free_ptr(dc_rog_tunables);
 
 	return 0;
 }
-- 
2.55.0