avoiding initial deadlock

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@324 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/openzap/src/zap_io.c

@@ -303,10 +303,9 @@ zap_status_t zap_span_create(zap_io_interface_t *zio, zap_span_t **span)
 		*span = new_span;
 		status = ZAP_SUCCESS;
 	}
-	zap_mutex_unlock(globals.mutex);	
 
 done:
-
+	zap_mutex_unlock(globals.mutex);
 	return status;
 }