perf trace: Removed duplicated NULL test

No need to test trace.evlist against NULL twice.

Signed-off-by: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1431347316-30401-2-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index cbfdb95..96a2eba 100644 (file)
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2721,11 +2721,10 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
        signal(SIGFPE, sighandler_dump_stack);
 
        trace.evlist = perf_evlist__new();
-       if (trace.evlist == NULL)
-               return -ENOMEM;
 
        if (trace.evlist == NULL) {
                pr_err("Not enough memory to run!\n");
+               err = -ENOMEM;
                goto out;
        }