linux-next: build warning after merge of the iommu tree

Hi all,

After merging the iommu tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

WARNING: modpost: vmlinux.o(.text.unlikely+0xddf06): Section mismatch in reference from the function detect_ivrs() to the variable .init.data:amd_iommu_force_enable
The function detect_ivrs() references
the variable __initdata amd_iommu_force_enable.
This is often because detect_ivrs lacks a __initdata 
annotation or the annotation of amd_iommu_force_enable is wrong.

Introduced by commit

  b1e650db2cc4 ("iommu/amd: Add amd_iommu=force_enable option")

-- 
Cheers,
Stephen Rothwell