perf dlfilter: Fix use of addr_location__exit() in dlfilter__object_code()

Stop calling addr_location__exit() when addr_location__init() was not
called.

Fixes: 0dd5041c

 ("perf addr_location: Add init/exit/copy functions")
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20230928071605.17624-1-adrian.hunter@intel.com


Signed-off-by: Namhyung Kim <namhyung@kernel.org>