Merge branch 'net-smc-fixes-2021-11-24'

Karsten Graul says:

====================
net/smc: fixes 2021-11-24

Patch 1 from DaXing fixes a possible loop in smc_listen().
Patch 2 prevents a NULL pointer dereferencing while iterating
over the lower network devices.
====================

Link: https://lore.kernel.org/r/20211124123238.471429-1-kgraul@linux.ibm.com


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