sw64: kvm: fix wrong info print of KVM_MEMHOTPLUG

Sunway inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I56WV8

--------------------------------

Due to the registration of guest IO address, there is wrong
pr_info of "KVM MEMHOTPLUG support" when booting the guest,
so we fix it.
Signed-off-by: NMin Fanlei <minfanlei@wxiat.com>
Signed-off-by: NGu Zitao <guzitao@wxiat.com>

arch/sw_64/kvm/kvm-sw64.c

@@ -308,6 +308,12 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
 	if (change == KVM_MR_FLAGS_ONLY || change == KVM_MR_DELETE)
 		return 0;
 
+	if (test_bit(IO_MARK_BIT, &(mem->guest_phys_addr)))
+		return 0;
+
+	if (test_bit(IO_MARK_BIT + 1, &(mem->guest_phys_addr)))
+		return 0;
+
 #ifndef CONFIG_KVM_MEMHOTPLUG
 	if (mem->guest_phys_addr) {
 		pr_info("%s, No KVM MEMHOTPLUG support!\n", __func__);
@@ -315,12 +321,6 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
 	}
 #endif
 
-	if (test_bit(IO_MARK_BIT, &(mem->guest_phys_addr)))
-		return 0;
-
-	if (test_bit(IO_MARK_BIT + 1, &(mem->guest_phys_addr)))
-		return 0;
-
 	if (!sw64_kvm_pool)
 		return -ENOMEM;