arch/powerpc/kernel/iommu.c:76:2-16: WARNING: NULL check before some freeing functions is not needed.

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   81aa0968b7ea6dbabcdcda37dc8434dca6e1565b
commit: 691602aab9c3cce31d3ff9529c09b7922a5f6224 powerpc/iommu/debug: Add debugfs entries for IOMMU tables
date:   7 weeks ago
config: powerpc-randconfig-c024-20210318 (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0

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


cocci warnings: (new ones prefixed by >>)
>> arch/powerpc/kernel/iommu.c:76:2-16: WARNING: NULL check before some freeing functions is not needed.

Please review and possibly fold the followup patch.

---
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Attachment: .config.gz
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