vfio/ccw: Use g_autofree variable in vfio_ccw_register_irq_notifier()

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>

hw/vfio/ccw.c

@@ -384,7 +384,7 @@ static void vfio_ccw_register_irq_notifier(VFIOCCWDevice *vcdev,
                                            Error **errp)
 {
     VFIODevice *vdev = &vcdev->vdev;
-    struct vfio_irq_info *irq_info;
+    g_autofree struct vfio_irq_info *irq_info = NULL;
     size_t argsz;
     int fd;
     EventNotifier *notifier;
@@ -421,14 +421,14 @@ static void vfio_ccw_register_irq_notifier(VFIOCCWDevice *vcdev,
     if (ioctl(vdev->fd, VFIO_DEVICE_GET_IRQ_INFO,
               irq_info) < 0 || irq_info->count < 1) {
         error_setg_errno(errp, errno, "vfio: Error getting irq info");
-        goto out_free_info;
+        return;
     }
 
     if (event_notifier_init(notifier, 0)) {
         error_setg_errno(errp, errno,
                          "vfio: Unable to init event notifier for irq (%d)",
                          irq);
-        goto out_free_info;
+        return;
     }
 
     fd = event_notifier_get_fd(notifier);
@@ -439,9 +439,6 @@ static void vfio_ccw_register_irq_notifier(VFIOCCWDevice *vcdev,
         qemu_set_fd_handler(fd, NULL, NULL, vcdev);
         event_notifier_cleanup(notifier);
     }
-
-out_free_info:
-    g_free(irq_info);
 }
 
 static void vfio_ccw_unregister_irq_notifier(VFIOCCWDevice *vcdev,