[PATCH] perf bench: remove unneeded variable

[baomingtong001]

fix the following coccicheck warning:

tools/perf/bench/find-bit-bench.c:127:5-8: Unneeded variable: "err". 
Return "0".

Signed-off-by: Mingtong Bao <baomingtong001@xxxxxxxxxx>
---
 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 7e25b0e413f6..70619bc73841 100644
--- a/tools/perf/bench/find-bit-bench.c
+++ b/tools/perf/bench/find-bit-bench.c
@@ -124,7 +124,7 @@ 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) {
@@ -135,5 +135,5 @@ 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;
 }