pwm: bcm2835: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-bcm2835.c

@@ -152,13 +152,9 @@ static int bcm2835_pwm_probe(struct platform_device *pdev)
 		return PTR_ERR(pc->base);
 
 	pc->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(pc->clk)) {
-		ret = PTR_ERR(pc->clk);
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev, "clock not found: %d\n", ret);
-
-		return ret;
-	}
+	if (IS_ERR(pc->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(pc->clk),
+				     "clock not found\n");
 
 	ret = clk_prepare_enable(pc->clk);
 	if (ret)