KVM: s390: Cleanup usage of current->mm in set_guest_storage_key
In set_guest_storage_key, we really want to reference the mm struct given as a parameter to the function. So replace the current->mm reference with the mm struct passed in by the caller. Signed-off-by: NJason J. Herne <jjherne@us.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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