NFC: fix reading from NFC EEPROM

[paul-szczepanek-arm]

Description

Reading operation returns failure despite succeeding because the closing of the session fails. This happens because it's not setting the current operation at the end of reading so when session is ended successfully the event is unexpected (since it's missing the current op set correctly) and hence returns a failure despite just succeeding. This fix adds that missing assignment to the current op.

Pull request type

[x] Fix
[ ] Refactor
[ ] Target update
[ ] Functionality change
[ ] Breaking change

[donatieng]

@ARMmbed/mbed-os-maintainers this one is not critical and can get in after RC1 as this specific flow is not being tested by the examples in OOB

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 3001
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7964/

Triggering tests

/morph test
/morph export-build
/morph mbed2-build

[mbed-ci]

Test : SUCCESS

Build number : 2768
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7964/2768

[mbed-ci]

Exporter Build : FAILURE

Build number : 2613
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7964/

[cmonr]

"Error initializing storage"...

/morph export-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2617
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7964/