KVM: arm64: free kvm->arch.nested_mmus with kvfree()

kvm->arch.nested_mmus is allocated with kvrealloc(), hence free it with
kvfree() instead of kfree().

Fixes: 4f128f8 ("KVM: arm64: nv: Support multiple nested Stage-2 mmu structures")
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240723142204.758796-1-dakr@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

Author: Danilo Krummrich

arch/arm64/kvm/nested.c

@@ -786,7 +786,7 @@ void kvm_arch_flush_shadow_all(struct kvm *kvm)
 		if (!WARN_ON(atomic_read(&mmu->refcnt)))
 			kvm_free_stage2_pgd(mmu);
 	}
-	kfree(kvm->arch.nested_mmus);
+	kvfree(kvm->arch.nested_mmus);
 	kvm->arch.nested_mmus = NULL;
 	kvm->arch.nested_mmus_size = 0;
 	kvm_uninit_stage2_mmu(kvm);