drm/amdgpu: Fix off-by-one errors in amdgpu_vm_bo_map

drm/amdgpu: Fix off-by-one errors in amdgpu_vm_bo_map

commit 005ae95e6ec119c64e2d16eb65a94c49e1dcf9f0 upstream.

eaddr is sometimes treated as the last address inside the address
range, and sometimes as the first address outside the range. This
was resulting in errors when a test filled up the entire address
space. Make it consistent to always be the last address within the
range.

Signed-off-by: Felix.Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>