KVM: selftests: Push vm_adjust_num_guest_pages() into "w/o vCPUs" helper

Move the call to vm_adjust_num_guest_pages() from vm_create_with_vcpus()
down into vm_create_without_vcpus().  This will allow a future patch to
make the "w/o vCPUs" variant the common inner helper, e.g. so that the
"with_vcpus" helper calls the "without_vcpus" helper, instead of having
them be separate paths.
Signed-off-by: NSean Christopherson <seanjc@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/lib/kvm_util.c

@@ -282,6 +282,8 @@ struct kvm_vm *vm_create_without_vcpus(enum vm_guest_mode mode, uint64_t pages)
 {
 	struct kvm_vm *vm;
 
+	pages = vm_adjust_num_guest_pages(mode, pages);
+
 	vm = __vm_create(mode, pages);
 
 	kvm_vm_elf_load(vm, program_invocation_name);
@@ -341,8 +343,6 @@ struct kvm_vm *vm_create_with_vcpus(enum vm_guest_mode mode, uint32_t nr_vcpus,
 		    "nr_vcpus = %d too large for host, max-vcpus = %d",
 		    nr_vcpus, kvm_check_cap(KVM_CAP_MAX_VCPUS));
 
-	pages = vm_adjust_num_guest_pages(mode, pages);
-
 	vm = vm_create_without_vcpus(mode, pages);
 
 	for (i = 0; i < nr_vcpus; ++i) {