gpio: zynq: Remove error prints in EPROBE_DEFER

In case of probe is deferred do not print the errors.
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

drivers/gpio/gpio-zynq.c

@@ -930,6 +930,7 @@ static int zynq_gpio_probe(struct platform_device *pdev)
 	/* Retrieve GPIO clock */
 	gpio->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(gpio->clk)) {
+		if (PTR_ERR(gpio->clk) != -EPROBE_DEFER)
 			dev_err(&pdev->dev, "input clock not found.\n");
 		return PTR_ERR(gpio->clk);
 	}