iio: tcs3472: convert remaining locking to guard(mutex)

Convert several functions to use guard(mutex)()

This avoids manual unlock calls on each return path, drops the goto
in tcs3472_write_event(), and removes 'ret' variables only needed to
return after the unlock.

While the conversion is in progress, take the opportunity to make a
few small cleanups that guard() enables:

  - In tcs3472_read_event_config(), replace '!!(...)' with
    '(...) ? 1 : 0' for readability.

  - In tcs3472_write_event_config(), tcs3472_powerdown() and
    tcs3472_resume() use an early return on the I2C
    write failure path.

No functional change.

Signed-off-by: Aldo Conte <aldocontelk@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

0 files changed, 0 insertions, 0 deletions