perf symbols: Slightly simplify 'err' usage in dso__synthesize_plt_symbols()

Return zero directly instead of needless 'goto out_elf_end' that does
the same thing. That allows 'err' to be initialized to -1 instead of
having to change its value later.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20230120123456.12449-6-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/symbol-elf.c

@@ -384,7 +384,7 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss)
 	GElf_Ehdr ehdr;
 	char sympltname[1024];
 	Elf *elf;
-	int nr = 0, symidx, err = 0;
+	int nr = 0, symidx, err = -1;
 
 	if (!ss->dynsym)
 		return 0;
@@ -397,7 +397,7 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss)
 	dynsym_idx = ss->dynsym_idx;
 
 	if (scn_dynsym == NULL)
-		goto out_elf_end;
+		return 0;
 
 	scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt,
 					  ".rela.plt", NULL);
@@ -405,11 +405,9 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss)
 		scn_plt_rel = elf_section_by_name(elf, &ehdr, &shdr_rel_plt,
 						  ".rel.plt", NULL);
 		if (scn_plt_rel == NULL)
-			goto out_elf_end;
+			return 0;
 	}
 
-	err = -1;
-
 	if (shdr_rel_plt.sh_link != dynsym_idx)
 		goto out_elf_end;