diff --git a/drivers/iio/temperature/ltc2983.c b/drivers/iio/temperature/ltc2983.c
index fcb96c44d954..08485c4ecd52 100644
--- a/drivers/iio/temperature/ltc2983.c
+++ b/drivers/iio/temperature/ltc2983.c
@@ -1231,12 +1231,11 @@ static int ltc2983_chan_read(struct ltc2983_data *st,
 	start_conversion |= LTC2983_STATUS_CHAN_SEL(sensor->chan);
 	dev_dbg(&st->spi->dev, "Start conversion on chan:%d, status:%02X\n",
 		sensor->chan, start_conversion);
+	reinit_completion(&st->completion);
 	/* start conversion */
 	ret = regmap_write(st->regmap, LTC2983_STATUS_REG, start_conversion);
 	if (ret)
 		return ret;
-
-	reinit_completion(&st->completion);
 	/*
 	 * wait for conversion to complete.
 	 * 300 ms should be more than enough to complete the conversion.