[PATCH -next] drm/i915: remove unreachable code

[kernel test robot]

Hi Yang,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20230530]

url:    https://github.com/intel-lab-lkp/linux/commits/Yang-Li/drm-i915-remove-unreachable-code/20230531-101832
base:   next-20230530
patch link:    https://lore.kernel.org/r/20230531021714.125078-1-yang.lee%40linux.alibaba.com
patch subject: [PATCH -next] drm/i915: remove unreachable code
config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20230531/202305312340.S0eChDKB-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/58232a66b9d21d80bc6b478e2a8fb1443da3adfc
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yang-Li/drm-i915-remove-unreachable-code/20230531-101832
        git checkout 58232a66b9d21d80bc6b478e2a8fb1443da3adfc
        # 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 drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305312340.S0eChDKB-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/gpu/drm/i915/display/intel_color.c: In function 'intel_color_prepare_commit':
>> drivers/gpu/drm/i915/display/intel_color.c:1803:28: error: unused variable 'crtc' [-Werror=unused-variable]
    1803 |         struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
         |                            ^~~~
   cc1: all warnings being treated as errors


vim +/crtc +1803 drivers/gpu/drm/i915/display/intel_color.c

3962ca4e080a52 Ville Syrjälä 2023-03-20  1800  
efb2b57edf20c3 Ville Syrjälä 2022-11-23  1801  void intel_color_prepare_commit(struct intel_crtc_state *crtc_state)
efb2b57edf20c3 Ville Syrjälä 2022-11-23  1802  {
b358c3b98813b1 Ville Syrjälä 2022-11-23 @1803  	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
b358c3b98813b1 Ville Syrjälä 2022-11-23  1804  
2487ae0bcb53a7 Ville Syrjälä 2022-11-23  1805  	/* FIXME DSB has issues loading LUTs, disable it for now */
2487ae0bcb53a7 Ville Syrjälä 2022-11-23  1806  	return;
efb2b57edf20c3 Ville Syrjälä 2022-11-23  1807  }
efb2b57edf20c3 Ville Syrjälä 2022-11-23  1808  

-- 
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