ibmvnic: register netdev after init of adapter

ibmvnic: register netdev after init of adapter

BugLink: https://bugs.launchpad.net/bugs/1964361
commit 570425f8c7c18b14fa8a2a58a0adb431968ad118 upstream.

Finish initializing the adapter before registering netdev so state
is consistent.

Fixes: c26eba03e407 ("ibmvnic: Update reset infrastructure to support tunable parameters")
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>