iio: magnetometer: ak8975: unify return code variable name

In one case 'rc' is used in the other 'err', the most use 'ret'.
Make the latter use the former, id est 'ret'.

While at it, drop unneeded ' < 0' checks.

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>
This commit is contained in:
Andy Shevchenko 2026-05-05 13:46:09 +02:00 • committed by Jonathan Cameron
commit a474d5cbdf