iio: potentiostat: Drop unnecessary -ENOMEM messages

The drivers do not require their own error messages for error
-ENOMEM, memory allocation failures. So remove the dev_err()
messages from the probe().

Signed-off-by: Dixit Parmar <dixitparmar19@gmail.com>
Link: https://patch.msgid.link/20250822-enomam_logs-v1-7-db87f2974552@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/potentiostat/lmp91000.c

@@ -321,10 +321,8 @@ static int lmp91000_probe(struct i2c_client *client)
 	data->trig = devm_iio_trigger_alloc(dev, "%s-mux%d",
 					    indio_dev->name,
 					    iio_device_id(indio_dev));
-	if (!data->trig) {
-		dev_err(dev, "cannot allocate iio trigger.\n");
+	if (!data->trig)
 		return -ENOMEM;
-	}
 
 	init_completion(&data->completion);