Fix the following smatch warnings:

arch/arm64/kvm/vmid.c:62 flush_context() warn: inconsistent indenting
Reported-by: Nkernel test robot <lkp@intel.com>
Signed-off-by: Nsunliming <sunliming@kylinos.cn>
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220602024805.511457-1-sunliming@kylinos.cn