net: ibm: emac: mal: fix wrong goto

[ Upstream commit 08c8acc9d8f3f70d62dd928571368d5018206490 ]

dcr_map is called in the previous if and therefore needs to be unmapped.

Fixes: 1ff0fcfc ("ibm_newemac: Fix new MAL feature handling")
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20241007235711.5714-1-rosenp@gmail.com


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