perf hist: Add error path into hist_entry__init

Adding error path into hist_entry__init to unify error handling, so
every new member does not need to free everything else.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: nageswara r sastry <nasastry@in.ibm.com>
Link: http://lkml.kernel.org/r/20190305152536.21035-3-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/hist.c

@@ -396,11 +396,8 @@ static int hist_entry__init(struct hist_entry *he,
 		 * adding new entries.  So we need to save a copy.
 		 */
 		he->branch_info = malloc(sizeof(*he->branch_info));
-		if (he->branch_info == NULL) {
-			map__zput(he->ms.map);
-			free(he->stat_acc);
-			return -ENOMEM;
-		}
+		if (he->branch_info == NULL)
+			goto err;
 
 		memcpy(he->branch_info, template->branch_info,
 		       sizeof(*he->branch_info));
@@ -419,21 +416,8 @@ static int hist_entry__init(struct hist_entry *he,
 
 	if (he->raw_data) {
 		he->raw_data = memdup(he->raw_data, he->raw_size);
-
-		if (he->raw_data == NULL) {
-			map__put(he->ms.map);
-			if (he->branch_info) {
-				map__put(he->branch_info->from.map);
-				map__put(he->branch_info->to.map);
-				free(he->branch_info);
-			}
-			if (he->mem_info) {
-				map__put(he->mem_info->iaddr.map);
-				map__put(he->mem_info->daddr.map);
-			}
-			free(he->stat_acc);
-			return -ENOMEM;
-		}
+		if (he->raw_data == NULL)
+			goto err_infos;
 	}
 	INIT_LIST_HEAD(&he->pairs.node);
 	thread__get(he->thread);
@@ -444,6 +428,21 @@ static int hist_entry__init(struct hist_entry *he,
 		he->leaf = true;
 
 	return 0;
+
+err_infos:
+	if (he->branch_info) {
+		map__put(he->branch_info->from.map);
+		map__put(he->branch_info->to.map);
+		free(he->branch_info);
+	}
+	if (he->mem_info) {
+		map__put(he->mem_info->iaddr.map);
+		map__put(he->mem_info->daddr.map);
+	}
+err:
+	map__zput(he->ms.map);
+	free(he->stat_acc);
+	return -ENOMEM;
 }
 
 static void *hist_entry__zalloc(size_t size)