fs/btrfs/free-space-cache.o: warning: objtool: btrfs_remove_free_space()+0x87d: unreachable instruction

fs/btrfs/free-space-cache.o: warning: objtool: btrfs_remove_free_space()+0x87d: unreachable instruction

[kernel test robot]

CC: linux-kernel@vger.kernel.org
TO: Naohiro Aota <naohiro.aota@wdc.com>
CC: David Sterba <dsterba@suse.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   944207047ca4dabe8e288f653e7ec6da05e70230
commit: 0ae79c6fe70d5c5c645733b7ed39d5e6021d8c9a btrfs: zoned: fix block group alloc_offset calculation
date:   3 months ago
config: x86_64-randconfig-a001-20211204 (https://download.01.org/0day-ci/archive/20211206/202112060525.NQugbdwr-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5f1d1854eb1450d352663ee732235893c5782237)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ae79c6fe70d5c5c645733b7ed39d5e6021d8c9a
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0ae79c6fe70d5c5c645733b7ed39d5e6021d8c9a
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash M=fs/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> fs/btrfs/free-space-cache.o: warning: objtool: btrfs_remove_free_space()+0x87d: unreachable instruction

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org