KVM: PPC: Book3S HV: Delay setting of kvm ops

Delay the setting of kvm_hv_ops until after all init code has
completed. This avoids leaving the ops still accessible if the init
fails.

Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220125155735.1018683-3-farosas@linux.ibm.com

Author: farosas

arch/powerpc/kvm/book3s_hv.c

@@ -6119,9 +6119,6 @@ static int kvmppc_book3s_init_hv(void)
 	}
 #endif
 
-	kvm_ops_hv.owner = THIS_MODULE;
-	kvmppc_hv_ops = &kvm_ops_hv;
-
 	init_default_hcalls();
 
 	init_vcore_lists();
@@ -6137,10 +6134,15 @@ static int kvmppc_book3s_init_hv(void)
 	}
 
 	r = kvmppc_uvmem_init();
-	if (r < 0)
+	if (r < 0) {
 		pr_err("KVM-HV: kvmppc_uvmem_init failed %d\n", r);
+		return r;
+	}
 
-	return r;
+	kvm_ops_hv.owner = THIS_MODULE;
+	kvmppc_hv_ops = &kvm_ops_hv;
+
+	return 0;
 }
 
 static void kvmppc_book3s_exit_hv(void)