perf script: Move filter_cpu() earlier

perf script: Move filter_cpu() earlier

Generally, it should be more efficient if filter_cpu() comes before
machine__resolve() because filter_cpu() is much less code than
machine__resolve().

Example:

 $ perf record --sample-cpu -- make -C tools/perf >/dev/null

Before:

 $ perf stat -- perf script -C 0 >/dev/null

  Performance counter stats for 'perf script -C 0':

            116.94 msec task-clock                #    0.992 CPUs utilized
                 2      context-switches          #   17.103 /sec
                 0      cpu-migrations            #    0.000 /sec
             8,187      page-faults               #   70.011 K/sec
       478,351,812      cycles                    #    4.091 GHz
       564,785,464      instructions              #    1.18  insn per cycle
       114,341,105      branches                  #  977.789 M/sec
         2,615,495      branch-misses             #    2.29% of all branches

       0.117840576 seconds time elapsed

       0.085040000 seconds user
       0.032396000 seconds sys

After:

 $ perf stat -- perf script -C 0 >/dev/null

  Performance counter stats for 'perf script -C 0':

            107.45 msec task-clock                #    0.992 CPUs utilized
                 3      context-switches          #   27.919 /sec
                 0      cpu-migrations            #    0.000 /sec
             7,964      page-faults               #   74.117 K/sec
       438,417,260      cycles                    #    4.080 GHz
       522,571,855      instructions              #    1.19  insn per cycle
       105,187,488      branches                  #  978.921 M/sec
         2,356,261      branch-misses             #    2.24% of all branches

       0.108282546 seconds time elapsed

       0.095935000 seconds user
       0.011991000 seconds sys

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210621150514.32159-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>