perf c2c report: Setup browser after opening perf.data

Because of the early browser switch we won't get possible error
messages, as it will clear the screen right after showing the message,
e.g.:

Before:

   $ sudo perf c2c report -d lcl
   $

After:
   $ sudo perf c2c report -d lcl
   File perf.data not owned by current user or root (use -f to override)
   $
   $ ls -la perf.data
   -rw-------. 1 acme acme 26648 Nov 22 15:11 perf.data
   $
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1479764011-10732-3-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-c2c.c

@@ -2535,13 +2535,6 @@ static int perf_c2c__report(int argc, const char **argv)
 	if (c2c.stats_only)
 		c2c.use_stdio = true;
 
-	if (c2c.use_stdio)
-		use_browser = 0;
-	else
-		use_browser = 1;
-
-	setup_browser(false);
-
 	if (!input_name || !strlen(input_name))
 		input_name = "perf.data";
 
@@ -2568,6 +2561,7 @@ static int perf_c2c__report(int argc, const char **argv)
 		pr_debug("No memory for session\n");
 		goto out;
 	}
+
 	err = setup_nodes(session);
 	if (err) {
 		pr_err("Failed setup nodes\n");
@@ -2587,6 +2581,13 @@ static int perf_c2c__report(int argc, const char **argv)
 		goto out_session;
 	}
 
+	if (c2c.use_stdio)
+		use_browser = 0;
+	else
+		use_browser = 1;
+
+	setup_browser(false);
+
 	err = perf_session__process_events(session);
 	if (err) {
 		pr_err("failed to process sample\n");