iio: adc: vf610: Drop -ENOMEM error message

Core already prints detailed error messages on ENOMEM errors and drivers
should avoid repeating it.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250713-iio-clk-get-enabled-v1-2-70abc1f9ce6c@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Author: krzk

drivers/iio/dac/vf610_dac.c

@@ -178,10 +178,8 @@ static int vf610_dac_probe(struct platform_device *pdev)
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev,
 					sizeof(struct vf610_dac));
-	if (!indio_dev) {
-		dev_err(&pdev->dev, "Failed allocating iio device\n");
+	if (!indio_dev)
 		return -ENOMEM;
-	}
 
 	info = iio_priv(indio_dev);
 	info->dev = &pdev->dev;