[intel-tdx:guest-rebased 65/83] kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless.

[kernel test robot]

tree:   https://github.com/intel/tdx.git guest-rebased
head:   4c095660b91dbdd18042456e395af0deeef93485
commit: 4ab45cefa80f97ba2bdc31226523c891832d1080 [65/83] swiotlb: Split up single swiotlb lock
config: s390-randconfig-c023-20220324 (https://download.01.org/0day-ci/archive/20220326/202203261644.zQlZ2Jw4-lkp@xxxxxxxxx/config)
compiler: s390-linux-gcc (GCC) 11.2.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>


cocci warnings: (new ones prefixed by >>)
>> kernel/dma/swiotlb.c:433:15-33: WARNING: casting value returned by memory allocation function to (struct io_tlb_area *) is useless.

Please review and possibly fold the followup patch.

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0-DAY CI Kernel Test Service
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