target-i386: Remove assert(kvm_enabled()) from host_x86_cpu_initfn()

The code will be changed to allow creation of the CPU object and
report kvm_required errors only at realizefn, so we need to make
the instance_init function more flexible.
Reviewed-by: NIgor Mammedov <imammedo@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>

target-i386/cpu.c

@@ -1547,16 +1547,17 @@ static void host_x86_cpu_initfn(Object *obj)
     CPUX86State *env = &cpu->env;
     KVMState *s = kvm_state;
 
-    assert(kvm_enabled());
-
     /* We can't fill the features array here because we don't know yet if
      * "migratable" is true or false.
      */
     cpu->host_features = true;
 
-    env->cpuid_level = kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX);
-    env->cpuid_xlevel = kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX);
-    env->cpuid_xlevel2 = kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX);
+    /* If KVM is disabled, cpu_x86_create() will already report an error */
+    if (kvm_enabled()) {
+        env->cpuid_level = kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX);
+        env->cpuid_xlevel = kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX);
+        env->cpuid_xlevel2 = kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX);
+    }
 
     object_property_set_bool(OBJECT(cpu), true, "pmu", &error_abort);
 }