[PATCH 4.4 21/68] xenbus: dont bail early from xenbus_dev_request_and_reply()

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Jan Beulich commit 7469be95a487319514adce2304ad2af3553d2fc9 upstream. xenbus_dev_request_and_reply() needs to track whether a transaction is open. For XS_TRANSACTION_START

[PATCH 4.4 21/68] xenbus: dont bail early from xenbus_dev_request_and_reply()

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Jan Beulich commit 7469be95a487319514adce2304ad2af3553d2fc9 upstream. xenbus_dev_request_and_reply() needs to track whether a transaction is open. For XS_TRANSACTION_START messages it calls