KVM: x86: use list_for_each_entry*

Use list_for_each_entry*() instead of list_for_each*() to simplify
the code.
Signed-off-by: NGeliang Tang <geliangtang@163.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/assigned-dev.c

@@ -51,11 +51,9 @@ struct kvm_assigned_dev_kernel {
 static struct kvm_assigned_dev_kernel *kvm_find_assigned_dev(struct list_head *head,
 						      int assigned_dev_id)
 {
-	struct list_head *ptr;
 	struct kvm_assigned_dev_kernel *match;
 
-	list_for_each(ptr, head) {
-		match = list_entry(ptr, struct kvm_assigned_dev_kernel, list);
+	list_for_each_entry(match, head, list) {
 		if (match->assigned_dev_id == assigned_dev_id)
 			return match;
 	}
@@ -373,14 +371,10 @@ static void kvm_free_assigned_device(struct kvm *kvm,
 
 void kvm_free_all_assigned_devices(struct kvm *kvm)
 {
-	struct list_head *ptr, *ptr2;
-	struct kvm_assigned_dev_kernel *assigned_dev;
-
-	list_for_each_safe(ptr, ptr2, &kvm->arch.assigned_dev_head) {
-		assigned_dev = list_entry(ptr,
-					  struct kvm_assigned_dev_kernel,
-					  list);
+	struct kvm_assigned_dev_kernel *assigned_dev, *tmp;
 
+	list_for_each_entry_safe(assigned_dev, tmp,
+				 &kvm->arch.assigned_dev_head, list) {
 		kvm_free_assigned_device(kvm, assigned_dev);
 	}
 }