mmc: omaphsmmc: fix return value check of mmcadd_host()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.86 by commit 62005dfcc396424db3337a1dc3ab49623537f5e5, it was introduced in version v2.6.29 by commit a45c6cb816474cefe56059fce422a9bdcd77e0dc. For more details please see the references link.