PM / devfreq: exynos-ppmu: remove useless assignment

The error code is propagated to the caller, so there is no need to keep
it additionally in the unused variable.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

drivers/devfreq/event/exynos-ppmu.c

@@ -673,7 +673,6 @@ static int exynos_ppmu_probe(struct platform_device *pdev)
 	for (i = 0; i < info->num_events; i++) {
 		edev[i] = devm_devfreq_event_add_edev(&pdev->dev, &desc[i]);
 		if (IS_ERR(edev[i])) {
-			ret = PTR_ERR(edev[i]);
 			dev_err(&pdev->dev,
 				"failed to add devfreq-event device\n");
 			return PTR_ERR(edev[i]);