clk: keystone: syscon-clk: Use dev_err_probe() helper

dev_err() can be replace with dev_err_probe() which will check if error
code is -EPROBE_DEFER.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220913031956.984475-1-yangyingliang@huawei.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/keystone/syscon-clk.c

@@ -102,12 +102,9 @@ static int ti_syscon_gate_clk_probe(struct platform_device *pdev)
 		return -EINVAL;
 
 	regmap = syscon_node_to_regmap(dev->of_node);
-	if (IS_ERR(regmap)) {
-		if (PTR_ERR(regmap) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-		dev_err(dev, "failed to find parent regmap\n");
-		return PTR_ERR(regmap);
-	}
+	if (IS_ERR(regmap))
+		return dev_err_probe(dev, PTR_ERR(regmap),
+				     "failed to find parent regmap\n");
 
 	num_clks = 0;
 	for (p = data; p->name; p++)