iio: gyro: mpu3050: stop double error reporting

i2c_mux_add_adapter already logs a message on failure.
Signed-off-by: NPeter Rosin <peda@axentia.se>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

drivers/iio/gyro/mpu3050-i2c.c

@@ -70,9 +70,8 @@ static int mpu3050_i2c_probe(struct i2c_client *client,
 		dev_err(&client->dev, "failed to allocate I2C mux\n");
 	else {
 		mpu3050->i2cmux->priv = mpu3050;
-		ret = i2c_mux_add_adapter(mpu3050->i2cmux, 0, 0, 0);
-		if (ret)
-			dev_err(&client->dev, "failed to add I2C mux\n");
+		/* Ignore failure, not critical */
+		i2c_mux_add_adapter(mpu3050->i2cmux, 0, 0, 0);
 	}
 
 	return 0;