media: platform: fix missing/incorrect resource cleanup in error case

In error case of s5p_mfc_power_on() we should call
clk_disable_unprepare() for the
clocks(from pm->clocks[0] to pm->clocks[i-1]).
Signed-off-by: NChengguang Xu <cgxu519@mykernel.net>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/samsung/s5p-mfc/s5p_mfc_pm.c

@@ -88,7 +88,6 @@ int s5p_mfc_power_on(void)
 		if (ret < 0) {
 			mfc_err("clock prepare failed for clock: %s\n",
 				pm->clk_names[i]);
-			i++;
 			goto err;
 		}
 	}
@@ -98,7 +97,7 @@ int s5p_mfc_power_on(void)
 
 	return 0;
 err:
-	while (--i > 0)
+	while (--i >= 0)
 		clk_disable_unprepare(pm->clocks[i]);
 	pm_runtime_put(pm->device);
 	return ret;