kernel/sched/build_policy.o: warning: objtool: do_idle() falls through to next function play_idle_precise()

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git objtool/core
head:   fb799447ae2974a07907906dff5bd4b9e47b7123
commit: 071c44e4278156f18a6a56958617223b6bffa6ab [22/23] sched/idle: Mark arch_cpu_idle_dead() __noreturn
config: x86_64-randconfig-c022-20230403 (https://download.01.org/0day-ci/archive/20230409/[email protected]/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0

reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=071c44e4278156f18a6a56958617223b6bffa6ab
git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
git fetch --no-tags tip objtool/core
git checkout 071c44e4278156f18a6a56958617223b6bffa6ab
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 olddefconfig
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> kernel/sched/build_policy.o: warning: objtool: do_idle() falls through to next function play_idle_precise()

0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests