ASoC: ti: davinci-mcasp: remove always zero of davinci_mcasp_get_dt_params

davinci_mcasp_get_dt_params alway return zero, and its return value
could be ignored by the caller. So make it 'void' type to avoid the
check its return value.

Fixes: 764958f2 ("ASoC: ti: davinci-mcasp: Support for auxclk-fs-ratio")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20201102103428.32678-1-zhangqilong3@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/ti/davinci-mcasp.c

@@ -2110,20 +2110,18 @@ static inline int davinci_mcasp_init_gpiochip(struct davinci_mcasp *mcasp)
 }
 #endif /* CONFIG_GPIOLIB */
 
-static int davinci_mcasp_get_dt_params(struct davinci_mcasp *mcasp)
+static void davinci_mcasp_get_dt_params(struct davinci_mcasp *mcasp)
 {
 	struct device_node *np = mcasp->dev->of_node;
 	int ret;
 	u32 val;
 
 	if (!np)
-		return 0;
+		return;
 
 	ret = of_property_read_u32(np, "auxclk-fs-ratio", &val);
 	if (ret >= 0)
 		mcasp->auxclk_fs_ratio = val;
-
-	return 0;
 }
 
 static int davinci_mcasp_probe(struct platform_device *pdev)
@@ -2359,9 +2357,7 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
 	if (ret)
 		goto err;
 
-	ret = davinci_mcasp_get_dt_params(mcasp);
-	if (ret)
-		return -EINVAL;
+	davinci_mcasp_get_dt_params(mcasp);
 
 	ret = devm_snd_soc_register_component(&pdev->dev,
 					&davinci_mcasp_component,