iio: magnetometer: ak8975: drop duplicate NULL check

The gpiod_set_consumer_name() is NULL-aware, no need to perform the same
check in the caller.

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

@@ -919,8 +919,7 @@ static int ak8975_probe(struct i2c_client *client)
 	eoc_gpiod = devm_gpiod_get_optional(&client->dev, NULL, GPIOD_IN);
 	if (IS_ERR(eoc_gpiod))
 		return PTR_ERR(eoc_gpiod);
-	if (eoc_gpiod)
-		gpiod_set_consumer_name(eoc_gpiod, "ak_8975");
+	gpiod_set_consumer_name(eoc_gpiod, "ak_8975");
 
 	/*
 	 * According to AK09911 datasheet, if reset GPIO is provided then