Merge branch 's390-qeth-fixes-2021-09-21'

Julian Wiedmann says:

====================
s390/qeth: fixes 2021-09-21

This brings two fixes for deadlocks when a device is removed while it
has certain types of async work pending. And one additional fix for a
missing NULL check in an error case.
====================

Link: https://lore.kernel.org/r/20210921145217.1584654-1-jwi@linux.ibm.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>