[PATCH v1 2/2] udmabuf: Add back support for mapping hugetlb pages

[kernel test robot]

Hi Vivek,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master next-20230622]
[cannot apply to drm-misc/drm-misc-next drm-tip/drm-tip v6.4-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Vivek-Kasireddy/udmabuf-Use-vmf_insert_pfn-and-VM_PFNMAP-for-handling-mmap/20230622-155402
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20230622072710.3707315-3-vivek.kasireddy%40intel.com
patch subject: [PATCH v1 2/2] udmabuf: Add back support for mapping hugetlb pages
config: openrisc-randconfig-c044-20230622 (https://download.01.org/0day-ci/archive/20230623/202306230534.TIq82gef-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230623/202306230534.TIq82gef-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306230534.TIq82gef-lkp@intel.com/

cocci warnings: (new ones prefixed by >>)
>> drivers/dma-buf/udmabuf.c:172:2-7: WARNING: NULL check before some freeing functions is not needed.
   drivers/dma-buf/udmabuf.c:360:2-7: WARNING: NULL check before some freeing functions is not needed.

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