[PATCH v2 2/2] thermal: intel: int340x: Check return value of ptc_create_groups()

[aravindanilraj0702]

From: Aravind Anilraj <aravindanilraj0702@xxxxxxxxx>

proc_thermal_ptc_add() ignores the return value of ptc_create_groups(),
causing the driver to silenty continue even if sysfs group creation
fails. The thermal control interface would be unavailable with no
indication of failure.

Check the return value and on failure clean up any sysfs groups that
were successfully created before the error, then propagate the error to
the caller which already handles it correctly via goto err_rem_rapl.

Signed-off-by: Aravind Anilraj <aravindanilraj0702@xxxxxxxxx>
---
 .../int340x_thermal/platform_temperature_control.c     | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/intel/int340x_thermal/platform_temperature_control.c b/drivers/thermal/intel/int340x_thermal/platform_temperature_control.c
index 18ac5014d8dc..d92a6f84a778 100644
--- a/drivers/thermal/intel/int340x_thermal/platform_temperature_control.c
+++ b/drivers/thermal/intel/int340x_thermal/platform_temperature_control.c
@@ -278,12 +278,18 @@ static void ptc_delete_debugfs(void)
 int proc_thermal_ptc_add(struct pci_dev *pdev, struct proc_thermal_device *proc_priv)
 {
 	if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_PTC) {
-		int i;
+		int i, ret;
 
 		for (i = 0; i < PTC_MAX_INSTANCES; i++) {
 			ptc_instance[i].offset = ptc_offsets[i];
 			ptc_instance[i].pdev = pdev;
-			ptc_create_groups(pdev, i, &ptc_instance[i]);
+			ret = ptc_create_groups(pdev, i, &ptc_instance[i]);
+			if (ret) {
+				while (i--)
+					sysfs_remove_group(&pdev->dev.kobj,
+							&ptc_instance[i].ptc_attr_group);
+				return ret;
+			}
 		}
 
 		ptc_create_debugfs();
-- 
2.47.3