cpufreq: brcmstb-avs-cpufreq: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.
Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/brcmstb-avs-cpufreq.c

@@ -878,7 +878,6 @@ static int brcm_avs_prepare_init(struct platform_device *pdev)
 	iounmap(priv->avs_intr_base);
 unmap_base:
 	iounmap(priv->base);
-	platform_set_drvdata(pdev, NULL);
 
 	return ret;
 }
@@ -1042,7 +1041,6 @@ static int brcm_avs_cpufreq_remove(struct platform_device *pdev)
 	priv = platform_get_drvdata(pdev);
 	iounmap(priv->base);
 	iounmap(priv->avs_intr_base);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }