bus: sunxi-rsb: Simplify code with dev_err_probe()

Use dev_err_probe() directly in the driver probe phase. This can
simplify the code a bit.

Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240905114134.80310-1-zhangzekun11@huawei.com
Signed-off-by: Chen-Yu Tsai <wens@csie.org>

Author: Zhang Zekun

drivers/bus/sunxi-rsb.c

@@ -751,12 +751,10 @@ static int sunxi_rsb_probe(struct platform_device *pdev)
 	int irq, ret;
 
 	of_property_read_u32(np, "clock-frequency", &clk_freq);
-	if (clk_freq > RSB_MAX_FREQ) {
-		dev_err(dev,
-			"clock-frequency (%u Hz) is too high (max = 20MHz)\n",
-			clk_freq);
-		return -EINVAL;
-	}
+	if (clk_freq > RSB_MAX_FREQ)
+		return dev_err_probe(dev, -EINVAL,
+				     "clock-frequency (%u Hz) is too high (max = 20MHz)\n",
+				     clk_freq);
 
 	rsb = devm_kzalloc(dev, sizeof(*rsb), GFP_KERNEL);
 	if (!rsb)
@@ -774,28 +772,22 @@ static int sunxi_rsb_probe(struct platform_device *pdev)
 		return irq;
 
 	rsb->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(rsb->clk)) {
-		ret = PTR_ERR(rsb->clk);
-		dev_err(dev, "failed to retrieve clk: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(rsb->clk))
+		return dev_err_probe(dev, PTR_ERR(rsb->clk),
+				     "failed to retrieve clk\n");
 
 	rsb->rstc = devm_reset_control_get(dev, NULL);
-	if (IS_ERR(rsb->rstc)) {
-		ret = PTR_ERR(rsb->rstc);
-		dev_err(dev, "failed to retrieve reset controller: %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(rsb->rstc))
+		return dev_err_probe(dev, PTR_ERR(rsb->rstc),
+				     "failed to retrieve reset controller\n");
 
 	init_completion(&rsb->complete);
 	mutex_init(&rsb->lock);
 
 	ret = devm_request_irq(dev, irq, sunxi_rsb_irq, 0, RSB_CTRL_NAME, rsb);
-	if (ret) {
-		dev_err(dev, "can't register interrupt handler irq %d: %d\n",
-			irq, ret);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "can't register interrupt handler irq %d\n", irq);
 
 	ret = sunxi_rsb_hw_init(rsb);
 	if (ret)