iio: magnetometer: ak8975: remove duplicate error message

The devm_request_irq() already prints an error message.
Remove the duplicate.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Author: andy-shev

drivers/iio/magnetometer/ak8975.c

@@ -583,17 +583,14 @@ static int ak8975_setup_irq(struct ak8975_data *data)
 	rc = devm_request_irq(&client->dev, irq, ak8975_irq_handler,
 			      IRQF_TRIGGER_RISING,
 			      dev_name(&client->dev), data);
-	if (rc < 0) {
-		dev_err(&client->dev, "irq %d request failed: %d\n", irq, rc);
+	if (rc < 0)
 		return rc;
-	}
 
 	data->eoc_irq = irq;
 
 	return rc;
 }
 
-
 /*
  * Perform some start-of-day setup, including reading the asa calibration
  * values and caching them.