[PATCH] perf: bench: Remove unneeded variable

[Wan Jiabing]

Fix coccicheck warning:

tools/perf/bench/find-bit-bench.c:123:5-8:
Unneeded variable: "err". Return "0" on line 134

Signed-off-by: Wan Jiabing <wanjiab...@vivo.com>
---
 tools/perf/bench/find-bit-bench.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/bench/find-bit-bench.c 
b/tools/perf/bench/find-bit-bench.c
index 73b5bcc5946a..7e748a56a8ba 100644
--- a/tools/perf/bench/find-bit-bench.c
+++ b/tools/perf/bench/find-bit-bench.c
@@ -120,7 +120,7 @@ static int do_for_each_set_bit(unsigned int num_bits)
 
 int bench_mem_find_bit(int argc, const char **argv)
 {
-       int err = 0, i;
+       int i;
 
        argc = parse_options(argc, argv, options, bench_usage, 0);
        if (argc) {
@@ -131,5 +131,5 @@ int bench_mem_find_bit(int argc, const char **argv)
        for (i = 1; i <= 2048; i <<= 1)
                do_for_each_set_bit(i);
 
-       return err;
+       return 0;
 }
-- 
2.30.2