perf auxtrace: Fix address filter duplicate symbol selection

When a match has been made to the nth duplicate symbol, return
success not error.

Example:

Before:

$ cat file.c
cat: file.c: No such file or directory
$ cat file1.c
#include <stdio.h>

static void func(void)
{
printf("First func\n");
}

void other(void);

int main()
{
func();
other();
return 0;
}
$ cat file2.c
#include <stdio.h>

static void func(void)
{
printf("Second func\n");
}

void other(void)
{
func();
}

$ gcc -Wall -Wextra -o test file1.c file2.c
$ perf record -e intel_pt//u --filter 'filter func @ ./test' -- ./test
Multiple symbols with name 'func'
#1 0x1149 l func
which is near main
#2 0x1179 l func
which is near other
Disambiguate symbol name by inserting #n after the name e.g. func #2
Or select a global symbol by inserting #0 or #g or #G
Failed to parse address filter: 'filter func @ ./test'
Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>]
Where multiple filters are separated by space or comma.
$ perf record -e intel_pt//u --filter 'filter func #2 @ ./test' -- ./test
Failed to parse address filter: 'filter func #2 @ ./test'
Filter format is: filter|start|stop|tracestop <start symbol or address> [/ <end symbol or size>] [@<file name>]
Where multiple filters are separated by space or comma.

After:

$ perf record -e intel_pt//u --filter 'filter func #2 @ ./test' -- ./test
First func
Second func
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.016 MB perf.data ]
$ perf script --itrace=b -Ftime,flags,ip,sym,addr --ns
1231062.526977619: tr strt 0 [unknown] => 558495708179 func
1231062.526977619: tr end call 558495708188 func => 558495708050 _init
1231062.526979286: tr strt 0 [unknown] => 55849570818d func
1231062.526979286: tr end return 55849570818f func => 55849570819d other

Fixes: 1b36c03e356936d6 ("perf record: Add support for using symbols in address filters")
Reported-by: Dmitrii Dolgov <[e-mail]>
Signed-off-by: Adrian Hunter <[e-mail]>
Tested-by: Dmitry Dolgov <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Ian Rogers <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/auxtrace.c

···
 				*size = sym->start - *start;
 			if (idx > 0) {
 				if (*size)
-					return 1;
+					return 0;
 			} else if (dso_sym_match(sym, sym_name, &cnt, idx)) {
 				print_duplicate_syms(dso, sym_name);
 				return -EINVAL;