iio: adc: qcom-spmi-iadc: Fix wakeup source leaks on device unbind

Device can be unbound, so driver must also release memory for the wakeup
source.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250406-b4-device-wakeup-leak-iio-v1-2-2d7d322a4a93@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/qcom-spmi-iadc.c

@@ -543,7 +543,9 @@ static int iadc_probe(struct platform_device *pdev)
 		else
 			return ret;
 	} else {
-		device_init_wakeup(iadc->dev, 1);
+		ret = devm_device_init_wakeup(iadc->dev);
+		if (ret)
+			return dev_err_probe(iadc->dev, ret, "Failed to init wakeup\n");
 	}
 
 	ret = iadc_update_offset(iadc);