watchdog: cadence: Do not show error in case of deferred probe

There is no reason to show error message if clocks are not ready yet.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/d3e295d5ba79f453b4aa4128c4fa63fbd6c16920.1570544944.git.michal.simek@xilinx.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/cadence_wdt.c

@@ -335,8 +335,10 @@ static int cdns_wdt_probe(struct platform_device *pdev)
 
 	wdt->clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(wdt->clk)) {
-		dev_err(dev, "input clock not found\n");
-		return PTR_ERR(wdt->clk);
+		ret = PTR_ERR(wdt->clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "input clock not found\n");
+		return ret;
 	}
 
 	ret = clk_prepare_enable(wdt->clk);