final means "final"

[misra cpp]

10-3-2 requires that overriding virtual functions are marked as 'override' or 'final'
10-3-3 requires that overriding virtual functions of a final class should be marked 'final'
          (its not explicit, but clear from the examples - where a function marked 'override' is shown Non-Compliant)

Your static analyser should be accepting 'final' 

For the next version of MISRA C++, we are likely to revise these requirements.