mmc: atmel-mci: fix return value check of mmcaddhost()
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 v6.0.16 by commit cc8bb436f3c842a86b9082d97933582120d180e2, it was introduced in version v2.6.27 by commit 7d2be0749a59096a334c94dc48f43294193cb8ed. For more details please see the references link.