drm/xe: Fix freq kobject leak on sysfs_create_files failure

Ensure gt->freq is released when sysfs_create_files() fails
in xe_gt_freq_init(). Without this, the kobject would leak.
Add kobject_put() before returning the error.

Fixes: fdc81c4 ("drm/xe: use devm_add_action_or_reset() helper")
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: Alex Zuo <alex.zuo@intel.com>
Reviewed-by: Xin Wang <x.wang@intel.com>
Link: https://patch.msgid.link/20251114205638.2184529-2-shuicheng.lin@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit 251be5f)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Author: ShuichengLin

drivers/gpu/drm/xe/xe_gt_freq.c

@@ -293,8 +293,10 @@ int xe_gt_freq_init(struct xe_gt *gt)
 		return -ENOMEM;
 
 	err = sysfs_create_files(gt->freq, freq_attrs);
-	if (err)
+	if (err) {
+		kobject_put(gt->freq);
 		return err;
+	}
 
 	err = devm_add_action_or_reset(xe->drm.dev, freq_fini, gt->freq);
 	if (err)