tools: exit with error if py needs to format

Make CI fail if format not pass.

Signed-off-by: xuxingliang <xuxingliang@xiaomi.com>

tools/checkpatch.sh

@@ -83,9 +83,9 @@ check_file() {
   fi
 
   if [ ${@##*.} == 'py' ]; then
-    black --check $@
-    flake8 --config ${TOOLDIR}/../.github/linters/setup.cfg $@
-    isort $@
+    black --check $@ || fail=1
+    flake8 --config ${TOOLDIR}/../.github/linters/setup.cfg $@ || fail=1
+    isort $@ || fail=1
   elif [ "$(is_rust_file $@)" == "1" ]; then
     if ! command -v rustfmt &> /dev/null; then
       fail=1