cxl/region: Fix leakage in __construct_region()

Failing the first sysfs_update_group() needs to explicitly
kfree the resource as it is too early for cxl_region_iomem_release()
to do so.

Signed-off-by: Davidlohr Bueso <[email protected]>
Reviewed-by: Ira Weiny <[email protected]>
Reviewed-by: Gregory Price <[email protected]>
Fixes: d6602e2 (cxl/region: Add support to indicate region has extended linear cache)
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Dave Jiang <[email protected]>

Author: Davidlohr Bueso

drivers/cxl/core/region.c

@@ -3854,8 +3854,10 @@ static int __construct_region(struct cxl_region *cxlr,
 	}
 
 	rc = sysfs_update_group(&cxlr->dev.kobj, &cxl_region_group);
-	if (rc)
+	if (rc) {
+		kfree(res);
 		return rc;
+	}
 
 	rc = insert_resource(cxlrd->res, res);
 	if (rc) {