target-arm: Fix segfault on startup when KVM enabled

Commit 50a2c6e5 introduced a bug where QEMU would segfault on startup
when using KVM on ARM hosts, because kvm_arm_reset_cpu() accesses
cpu->cpreg_reset_values, which is not allocated before
kvm_arch_init_vcpu(). Fix this by not calling cpu_reset() until after
qemu_init_vcpu().
Acked-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NAndreas Faerber <afaerber@suse.de>
Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
Message-id: 1401194263-13010-1-git-send-email-christoffer.dall@linaro.org
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

target-arm/cpu.c

@@ -370,8 +370,8 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
 
     init_cpreg_list(cpu);
 
-    cpu_reset(cs);
     qemu_init_vcpu(cs);
+    cpu_reset(cs);
 
     acc->parent_realize(dev, errp);
 }