blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE

blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE

Make sure that RQF_TIMED_OUT is cleared when a request is reused
after a block driver timeout handler has returned BLK_EH_DONE.

Fixes: da6612673988 ("blk-mq: don't time out requests again that are in the timeout handler")
Signed-off-by: Bart Van Assche <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Jianchao Wang <[email protected]>
Cc: Andrew Randrianasulu <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>