[asahilinux:bits/250-aop 78/112] warning: unused import: `error::to_result`

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/AsahiLinux/linux bits/250-aop
head:   fd3792ec2053672fb9359a570552a51ae48f4035
commit: 05ee061d013fffe313ec788233c61c76aae525a6 [78/112] rust: of: Add Node::address_as_resource()
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250210/202502101747.NRAfNeDS-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250210/202502101747.NRAfNeDS-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502101747.NRAfNeDS-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> warning: unused import: `error::to_result`
   --> rust/kernel/of.rs:7:47
   |
   7 | use crate::{bindings, device_id::RawDeviceId, error::to_result, io_mem::Resource, prelude::*};
   |                                               ^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default
--
>> warning: unused variable: `index`
   --> rust/kernel/of.rs:257:39
   |
   257 |     pub fn address_as_resource(&self, index: usize) -> Result<Resource> {
   |                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
   |
   = note: `#[warn(unused_variables)]` on by default

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