nvmem: simplify locking with guard()

Use lock guards from cleanup.h to simplify locking. While at it: add the
missing mutex.h include.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Tested-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://patch.msgid.link/20260729094647.111468-5-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bartosz Golaszewski 2026-07-29 10:46:37 +01:00 • committed by Greg Kroah-Hartman
commit 2aa495438c