perf tools: Change (symbol|annotation)__calc_percent return type to void

There's no need for symbol__calc_percent and annotation__calc_percent
functions to return any value, since it's always zero. Changing both
function to return void.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-z0gs28hh24m4gia1t1ctraye@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/annotate.c

@@ -1584,8 +1584,8 @@ static void calc_percent(struct sym_hist *hist,
 	}
 }
 
-static int annotation__calc_percent(struct annotation *notes,
-				    struct perf_evsel *evsel, s64 len)
+static void annotation__calc_percent(struct annotation *notes,
+				     struct perf_evsel *evsel, s64 len)
 {
 	struct annotation_line *al, *next;
 
@@ -1609,15 +1609,13 @@ static int annotation__calc_percent(struct annotation *notes,
 			calc_percent(hist, sample, al->offset, end);
 		}
 	}
-
-	return 0;
 }
 
-int symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel)
+void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel)
 {
 	struct annotation *notes = symbol__annotation(sym);
 
-	return annotation__calc_percent(notes, evsel, symbol__size(sym));
+	annotation__calc_percent(notes, evsel, symbol__size(sym));
 }
 
 int symbol__annotate(struct symbol *sym, struct map *map,
@@ -1656,10 +1654,11 @@ int symbol__annotate(struct symbol *sym, struct map *map,
 	}
 
 	err = symbol__disassemble(sym, &args);
-	if (err)
-		return err;
+	if (!err)
+		symbol__calc_percent(sym, evsel);
+
+	return err;
 
-	return symbol__calc_percent(sym, evsel);
 }
 
 static void insert_source_line(struct rb_root *root, struct annotation_line *al)

tools/perf/util/annotate.h

@@ -107,7 +107,7 @@ struct annotation_line *
 annotation_line__next(struct annotation_line *pos, struct list_head *head);
 int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
 size_t disasm__fprintf(struct list_head *head, FILE *fp);
-int symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel);
+void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel);
 
 struct sym_hist {
 	u64		      nr_samples;