kvm: correct syntax for task

Ansible doesn't want another task list here, so we just put the CPU
mitigation steps as their own individual tasks.

roles/kvm/tasks/main.yml

@@ -72,18 +72,15 @@
     - reboot
   when: ansible_system_vendor != "QEMU"
 
+- name: Check if CPU is Intel
+  shell: grep -c AMD /proc/cpuinfo
+  register: intel_check
 
-- name: Disable the kernel's CPU mitigations
-  tasks:
-    - name: Check if CPU is Intel
-      shell: grep -c AMD /proc/cpuinfo
-      register: intel_check
-
-    - name: Install grub config with mitigations off
-      copy:
-        src: grub-mitigations.conf
-        dest: /etc/sysconfig/grub
-        mode: 0644
-      notify:
-        - reboot
-      when: intel_check.stdout != "0"
+- name: Install grub config to disable CPU mitigations
+  copy:
+    src: grub-mitigations.conf
+    dest: /etc/sysconfig/grub
+    mode: 0644
+  notify:
+    - reboot
+  when: intel_check.stdout != "0"