KVM: arm64: nv: Use GFP_KERNEL_ACCOUNT for sysreg_masks allocation

Of course, userspace is in the driver's seat for struct kvm and
associated allocations. Make sure the sysreg_masks allocation
participates in kmem accounting.

Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240617181018.2054332-1-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

arch/arm64/kvm/nested.c

@@ -198,7 +198,7 @@ int kvm_init_nv_sysregs(struct kvm *kvm)
 		goto out;
 
 	kvm->arch.sysreg_masks = kzalloc(sizeof(*(kvm->arch.sysreg_masks)),
-					 GFP_KERNEL);
+					 GFP_KERNEL_ACCOUNT);
 	if (!kvm->arch.sysreg_masks) {
 		ret = -ENOMEM;
 		goto out;