i2c: at91: Use dev_err_probe() instead of dev_err()

Change
if (IS_ERR(x)) { dev_err(...); return PTR_ERR(x); }
into
return dev_err_probe()

Also, return the correct error instead of hardcoding -ENODEV
This change has also the advantage of handling the -EPROBE_DEFER situation.

Signed-off-by: Yann Sionneau <yann@sionneau.net>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

Author: fallen

drivers/i2c/busses/i2c-at91-core.c

@@ -222,10 +222,9 @@ static int at91_twi_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, dev);
 
 	dev->clk = devm_clk_get(dev->dev, NULL);
-	if (IS_ERR(dev->clk)) {
-		dev_err(dev->dev, "no clock defined\n");
-		return -ENODEV;
-	}
+	if (IS_ERR(dev->clk))
+		return dev_err_probe(dev->dev, PTR_ERR(dev->clk), "no clock defined\n");
+
 	clk_prepare_enable(dev->clk);
 
 	snprintf(dev->adapter.name, sizeof(dev->adapter.name), "AT91");