phy: qcom-qmp-pcie-msm8996: Use dev_err_probe() to simplify code

In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20220924070300.25080-3-yuancan@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c

@@ -874,12 +874,9 @@ static int qmp_pcie_msm8996_probe(struct platform_device *pdev)
 		return ret;
 
 	ret = qmp_pcie_msm8996_vreg_init(dev, cfg);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "failed to get regulator supplies: %d\n",
-				ret);
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "failed to get regulator supplies\n");
 
 	num = of_get_available_child_count(dev->of_node);
 	/* do we have a rogue child node ? */