KVM: PPC: Book3S HV: Use consistent type for return value of kvm_age_rmapp()

The return value type defined in the function kvm_age_rmapp() is
"bool", but the return value type defined in the implementation of the
function kvm_age_rmapp() is "int".

Change the return value type to "bool".
Signed-off-by: Bo Liu <liubo03@inspur.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220401065252.36472-1-liubo03@inspur.com

arch/powerpc/kvm/book3s_64_mmu_hv.c

@@ -887,7 +887,7 @@ static bool kvm_age_rmapp(struct kvm *kvm, struct kvm_memory_slot *memslot,
 	struct revmap_entry *rev = kvm->arch.hpt.rev;
 	unsigned long head, i, j;
 	__be64 *hptep;
-	int ret = 0;
+	bool ret = false;
 	unsigned long *rmapp;
 
 	rmapp = &memslot->arch.rmap[gfn - memslot->base_gfn];
@@ -895,7 +895,7 @@ static bool kvm_age_rmapp(struct kvm *kvm, struct kvm_memory_slot *memslot,
 	lock_rmap(rmapp);
 	if (*rmapp & KVMPPC_RMAP_REFERENCED) {
 		*rmapp &= ~KVMPPC_RMAP_REFERENCED;
-		ret = 1;
+		ret = true;
 	}
 	if (!(*rmapp & KVMPPC_RMAP_PRESENT)) {
 		unlock_rmap(rmapp);
@@ -927,7 +927,7 @@ static bool kvm_age_rmapp(struct kvm *kvm, struct kvm_memory_slot *memslot,
 				rev[i].guest_rpte |= HPTE_R_R;
 				note_hpte_modification(kvm, &rev[i]);
 			}
-			ret = 1;
+			ret = true;
 		}
 		__unlock_hpte(hptep, be64_to_cpu(hptep[0]));
 	} while ((i = j) != head);