Revert "dpaa_eth: fix error in dpaa_remove()"

This reverts commit 5bbb99d2 which is
commit 88075256ee817041d68c2387f29065b5cb2b342a upstream.

Jiri writes that this was an incorrect fix, and Madalin-cristian says it
was fixed differently in a later patch.  So just revert this from
4.14.y.

Reported-by: Jiri Slaby <jslaby@suse.cz>
Cc: Madalin Bucur <madalin.bucur@nxp.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>