fuse: connection remove fix

Re-add lost removal of fc from fuse_conn_list and the control filesystem.
Reported-by: kernel test robot <rong.a.chen@intel.com>
Fixes: fcee216b ("fuse: split fuse_mount off of fuse_conn")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/fuse/inode.c

@@ -1547,6 +1547,13 @@ void fuse_conn_destroy(struct fuse_mount *fm)
 
 	fuse_abort_conn(fc);
 	fuse_wait_aborted(fc);
+
+	if (!list_empty(&fc->entry)) {
+		mutex_lock(&fuse_mutex);
+		list_del(&fc->entry);
+		fuse_ctl_remove_conn(fc);
+		mutex_unlock(&fuse_mutex);
+	}
 }
 EXPORT_SYMBOL_GPL(fuse_conn_destroy);