Fix the following coccicheck warnings:

./sound/soc/sof/amd/acp-ipc.c:74:2-3: Unneeded semicolon.
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: NJiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220309004929.125558-1-jiapeng.chong@linux.alibaba.comSigned-off-by: NMark Brown <broonie@kernel.org>