scsi: sd: Fix potential NULL pointer dereference

In the Linux kernel, the following vulnerability has been resolved:

scsi: sd: Fix potential NULL pointer dereference

If sd_probe() sees an early error before sdkp->device is initialized,

sd_zbc_release_disk() is called. This causes a NULL pointer dereference

when sd_is_zoned() is called inside that function. Avoid this by removing

the call to sd_zbc_release_disk() in sd_probe() error path.

This change is safe and does not result in zone information memory leakage

because the zone information for a zoned disk is allocated only when

sd_revalidate_disk() is called, at which point sdkp->disk_dev is fully set,

resulting in sd_disk_release() being called when needed to cleanup a disk

zone information using sd_zbc_release_disk().