fs/btrfs/delayed-ref.o: warning: objtool: add_delayed_ref+0x1ac: unreachable instruction

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   28bbe4ea686a023929d907cc168430b61094811c
commit: f75464f7bbbdd3bd63b91a1f023e26ef85e348c3 btrfs: unify the btrfs_add_delayed_*_ref helpers into one helper
date:   3 months ago
config: loongarch-randconfig-001-20240722 (https://download.01.org/0day-ci/archive/20240724/202407240323.OFy29s1f-lkp@xxxxxxxxx/config)
compiler: loongarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240724/202407240323.OFy29s1f-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407240323.OFy29s1f-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   fs/btrfs/delayed-ref.o: warning: objtool: insert_delayed_ref+0x1cc: unreachable instruction
>> fs/btrfs/delayed-ref.o: warning: objtool: add_delayed_ref+0x1ac: unreachable instruction


objdump-func vmlinux.o add_delayed_ref:

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