clk: wm831x: Use devm_clk_register() to simplify code

	clkdata->xtal_ena = ret & WM831X_XTAL_ENA;

	clkdata->xtal_hw.init = &wm831x_xtal_init;

	clkdata->xtal = clk_register(&pdev->dev, &clkdata->xtal_hw);

	clkdata->xtal = devm_clk_register(&pdev->dev, &clkdata->xtal_hw);

	if (IS_ERR(clkdata->xtal))

		return PTR_ERR(clkdata->xtal);

	clkdata->fll_hw.init = &wm831x_fll_init;

	clkdata->fll = clk_register(&pdev->dev, &clkdata->fll_hw);

	if (IS_ERR(clkdata->fll)) {

		ret = PTR_ERR(clkdata->fll);

		goto err_xtal;

	}

	clkdata->fll = devm_clk_register(&pdev->dev, &clkdata->fll_hw);

	if (IS_ERR(clkdata->fll))

		return PTR_ERR(clkdata->fll);

	clkdata->clkout_hw.init = &wm831x_clkout_init;

	clkdata->clkout = clk_register(&pdev->dev, &clkdata->clkout_hw);

	if (IS_ERR(clkdata->clkout)) {

		ret = PTR_ERR(clkdata->clkout);

		goto err_fll;

	}

	clkdata->clkout = devm_clk_register(&pdev->dev, &clkdata->clkout_hw);

	if (IS_ERR(clkdata->clkout))

		return PTR_ERR(clkdata->clkout);

	dev_set_drvdata(&pdev->dev, clkdata);

	return 0;

err_fll:

	clk_unregister(clkdata->fll);

err_xtal:

	clk_unregister(clkdata->xtal);

	return ret;

}

static int __devexit wm831x_clk_remove(struct platform_device *pdev)

{

	struct wm831x_clk *clkdata = dev_get_drvdata(&pdev->dev);

	clk_unregister(clkdata->clkout);

	clk_unregister(clkdata->fll);

	clk_unregister(clkdata->xtal);

	return 0;

}