driver core/platform_device_add_resources: free resource before overwriting

Reviewed-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/base/platform.c

@@ -200,6 +200,7 @@ int platform_device_add_resources(struct platform_device *pdev,
 			return -ENOMEM;
 	}
 
+	kfree(pdev->resource);
 	pdev->resource = r;
 	pdev->num_resources = num;
 	return 0;