perf annotate: Check return value of evsel__get_arch() properly

Check the error code of evsel__get_arch() in the symbol__annotate().
Previously it checked non-zero value but after the refactoring it does
only for negative values.

Fixes: 0669729 ("perf annotate: Factor out evsel__get_arch()")
Suggested-by: James Clark <james.clark@linaro.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Tianyou Li <tianyou.li@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

Author: TianyouLi

tools/perf/util/annotate.c

@@ -1021,7 +1021,7 @@ int symbol__annotate(struct map_symbol *ms, struct evsel *evsel,
 	int err, nr;
 
 	err = evsel__get_arch(evsel, &arch);
-	if (err < 0)
+	if (err)
 		return err;
 
 	if (parch)