[PATCH v2 3/3] arm-smmu: select suitable MSI IOVA

[kernel test robot]

Hi Shyam,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on linus/master v6.15-rc1 next-20250411]
[cannot apply to soc/for-next]
[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/Shyam-Saini/arm-smmu-move-MSI_IOVA-macro-definitions/20250411-070014
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20250410225030.2528385-4-shyamsaini%40linux.microsoft.com
patch subject: [PATCH v2 3/3] arm-smmu: select suitable MSI IOVA
config: arm-randconfig-002-20250412 (https://download.01.org/0day-ci/archive/20250412/202504120727.1ZmvnvO2-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250412/202504120727.1ZmvnvO2-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/202504120727.1ZmvnvO2-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from kernel/fork.c:103:0:
   include/linux/iommu.h: In function 'select_msi_iova_base':
>> include/linux/iommu.h:1573:1: warning: no return statement in function returning non-void [-Wreturn-type]
    }
    ^


vim +1573 include/linux/iommu.h

  1570	
  1571	static inline u32 select_msi_iova_base(u32 erratic_iova_addr)
  1572	{
> 1573	}
  1574	

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