ibmvnic: free reset-work-item when flushing

ibmvnic: free reset-work-item when flushing

BugLink: https://bugs.launchpad.net/bugs/1964361
commit 8d0657f39f487d904fca713e0bc39c2707382553 upstream.

Fix a tiny memory leak when flushing the reset work queue.

Fixes: 2770a7984db5 ("ibmvnic: Introduce hard reset recovery")
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>