Re: fs/btrfs/send.c:6877:5-8: Unneeded variable: "ret". Return "0" on line 6883

[David Sterba <dsterba@suse.cz>]

On Thu, Oct 10, 2024 at 12:04:53AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   75b607fab38d149f232f01eae5e6392b394dd659
> commit: 38622010a6de3a62cc72688348548854ed82dcf5 btrfs: send: add support for fs-verity
> date:   2 years ago
> config: i386-randconfig-052-20241009 (https://download.01.org/0day-ci/archive/20241009/202410092305.WbyqspH8-lkp@intel.com/config)
> compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
> 
> 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@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202410092305.WbyqspH8-lkp@intel.com/
> 
> cocci warnings: (new ones prefixed by >>)
> >> fs/btrfs/send.c:6877:5-8: Unneeded variable: "ret". Return "0" on line 6883
> 
> vim +6877 fs/btrfs/send.c
> 
>   6874	
>   6875	static int changed_verity(struct send_ctx *sctx, enum btrfs_compare_tree_result result)
>   6876	{
> > 6877		int ret = 0;
>   6878	
>   6879		if (!sctx->cur_inode_new_gen && !sctx->cur_inode_deleted) {
>   6880			if (result == BTRFS_COMPARE_TREE_NEW)
>   6881				sctx->cur_inode_needs_verity = true;
>   6882		}
> > 6883		return ret;

Trivial fix if somebody wants to take it. All changed_ callbacks must
return a value but here the verity status is passed via the context so
this should be 'return 0'.