iio: pressure: bmp280: Remove, add and update error messages

Remove duplicate error messages, add missing error messages and
update redundant ones.

Add one missing error check.

Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Link: https://lore.kernel.org/r/20240508165207.145554-3-vassilisamir@gmail.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>