Clear can_flip flag after flip the buffer.

Otherwise, we may flip the buffer which we shouldn't if the descriptor
is dropped.

Change-Id: I3e9c376d24203d7cd701a9f1e93e6021ea49db51
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/2141
Reviewed-by: Roy Yang <royyang@google.com>
Reviewed-by: Yangchun Fu <yangchun@google.com>
1 file changed