[PATCH] platform/x86: intel/pmc: Fix iounmap call for valid addresses

[Xi Pardee <xi.pardee@linux.intel.com>]

pmc_core_clean_structure() is called when generic_core_init() fails.
generic_core_init() could fail before ioremap() is called to get
a valid regbase for pmc structure. The current code does not check
regbase before calling iounmap(). Add a check to fix it.

Fixes: 1b8c7b843c00 ("platform/x86:intel/pmc: Discover PMC devices")
Signed-off-by: Xi Pardee <xi.pardee@linux.intel.com>
---
 drivers/platform/x86/intel/pmc/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c
index 7a1d11f2914f..de5fc06232e5 100644
--- a/drivers/platform/x86/intel/pmc/core.c
+++ b/drivers/platform/x86/intel/pmc/core.c
@@ -1471,7 +1471,7 @@ static void pmc_core_clean_structure(struct platform_device *pdev)
 	for (i = 0; i < ARRAY_SIZE(pmcdev->pmcs); ++i) {
 		struct pmc *pmc = pmcdev->pmcs[i];
 
-		if (pmc)
+		if (pmc && pmc->regbase)
 			iounmap(pmc->regbase);
 	}
 
-- 
2.43.0