CVE-2023-54204

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mmc: sunplus: fix return value check of mmc_add_host()<br /> <br /> mmc_add_host() may return error, if we ignore its return value,<br /> 1. the memory allocated in mmc_alloc_host() will be leaked<br /> 2. null-ptr-deref will happen when calling mmc_remove_host()<br /> in remove function spmmc_drv_remove() because deleting not<br /> added device.<br /> <br /> Fix this by checking the return value of mmc_add_host(). Moreover,<br /> I fixed the error handling path of spmmc_drv_probe() to clean up.