platform/x86:intel/pmc: Use devm for mutex_init

JIRA: https://issues.redhat.com/browse/RHEL-110838

commit 6f130e0
Author: Xi Pardee <xi.pardee@linux.intel.com>
Date:   Fri Apr 25 12:52:31 2025 -0700

    platform/x86:intel/pmc: Use devm for mutex_init

    Use devm_mutex_init() to avoid accidental resource leak in the
    future.

    Signed-off-by: Xi Pardee <xi.pardee@linux.intel.com>
    Link: https://lore.kernel.org/r/20250425195237.493129-4-xi.pardee@linux.intel.com
    Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
    Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Signed-off-by: Steve Best <sbest@redhat.com>

Author: sfbest

drivers/platform/x86/intel/pmc/core.c

@@ -1681,7 +1681,6 @@ static void pmc_core_clean_structure(struct platform_device *pdev)
 		pmt_telem_unregister_endpoint(pmcdev->punit_ep);
 
 	platform_set_drvdata(pdev, NULL);
-	mutex_destroy(&pmcdev->lock);
 }
 
 static int pmc_core_probe(struct platform_device *pdev)
@@ -1726,7 +1725,9 @@ static int pmc_core_probe(struct platform_device *pdev)
 	if (!pmcdev->pkgc_res_cnt)
 		return -ENOMEM;
 
-	mutex_init(&pmcdev->lock);
+	ret = devm_mutex_init(&pdev->dev, &pmcdev->lock);
+	if (ret)
+		return ret;
 
 	if (pmc_dev_info->init)
 		ret = pmc_dev_info->init(pmcdev, pmc_dev_info);