arm64: debug: Remove unused return value from do_debug_exception()

do_debug_exception() goes out of its way to return a value that isn't
ever used, so just make the thing void.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2019-02-25 12:06:43 +00:00
commit 52c6d145da