Buffer 'msg' is memset() but never actually used. Drop it.

Link: https://lore.kernel.org/r/1650536693-13089-1-git-send-email-baihaowen@meizu.comSigned-off-by: NHaowen Bai <baihaowen@meizu.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>