pinctrl: baytrail: Use local variable to keep device pointer

{

	const struct intel_pinctrl_soc_data *soc_data = NULL;

	const struct intel_pinctrl_soc_data **soc_table;

	struct device *dev = &pdev->dev;

	struct acpi_device *acpi_dev;

	struct byt_gpio *vg;

	int i, ret;

	acpi_dev = ACPI_COMPANION(&pdev->dev);

	acpi_dev = ACPI_COMPANION(dev);

	if (!acpi_dev)

		return -ENODEV;

	soc_table = (const struct intel_pinctrl_soc_data **)device_get_match_data(&pdev->dev);

	soc_table = (const struct intel_pinctrl_soc_data **)device_get_match_data(dev);

	for (i = 0; soc_table[i]; i++) {

		if (!strcmp(acpi_dev->pnp.unique_id, soc_table[i]->uid)) {

	if (!soc_data)

		return -ENODEV;

	vg = devm_kzalloc(&pdev->dev, sizeof(*vg), GFP_KERNEL);

	vg = devm_kzalloc(dev, sizeof(*vg), GFP_KERNEL);

	if (!vg)

		return -ENOMEM;

	vg->dev = &pdev->dev;

	vg->dev = dev;

	ret = byt_set_soc_data(vg, soc_data);

	if (ret) {

		dev_err(&pdev->dev, "failed to set soc data\n");

		dev_err(dev, "failed to set soc data\n");

		return ret;

	}

	vg->pctl_desc		= byt_pinctrl_desc;

	vg->pctl_desc.name	= dev_name(&pdev->dev);

	vg->pctl_desc.name	= dev_name(dev);

	vg->pctl_desc.pins	= vg->soc_data->pins;

	vg->pctl_desc.npins	= vg->soc_data->npins;

	vg->pctl_dev = devm_pinctrl_register(&pdev->dev, &vg->pctl_desc, vg);

	vg->pctl_dev = devm_pinctrl_register(dev, &vg->pctl_desc, vg);

	if (IS_ERR(vg->pctl_dev)) {

		dev_err(&pdev->dev, "failed to register pinctrl driver\n");

		dev_err(dev, "failed to register pinctrl driver\n");

		return PTR_ERR(vg->pctl_dev);

	}

		return ret;

	platform_set_drvdata(pdev, vg);

	pm_runtime_enable(&pdev->dev);

	pm_runtime_enable(dev);

	return 0;

}