perf addr_location: Update outdated comment

perf addr_location: Update outdated comment

The function addr_location__put() was renamed addr_location__exit() in
commit 0dd5041c9a0eaf8c ("perf addr_location: Add init/exit/copy
functions").  Make the comment preceding the function consistent with
the function itself.

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kexin Sun <kexinsun@smail.nju.edu.cn>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ratnadira Widyasari <ratnadiraw@smu.edu.sg>
Cc: Xutong Ma <xutong.ma@inria.fr>
Cc: Yumbo Lyu <yunbolyu@smu.edu.sg>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>