driver core: class: fix block class problem when removing CONFIG_SYSFS_DEPRECATED*

In removing the CONFIG_SYSFS_DEPRECATED and CONFIG_SYSFS_DEPRECATED_V2
config options, I messed up in the __class_register() function and got
the logic incorrect.  Fix this all up by just removing the special case
of a block device class logic in this function, as that is what is
intended.

In testing, this solves the boot problem on my systems, hopefully on
others as well.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 721da5ce ("driver core: remove CONFIG_SYSFS_DEPRECATED and CONFIG_SYSFS_DEPRECATED_V2")
Link: https://lore.kernel.org/r/20230307075102.3537-1-gregkh@linuxfoundation.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/class.c

@@ -178,13 +178,7 @@ int __class_register(struct class *cls, struct lock_class_key *key)
 	if (!cls->dev_kobj)
 		cls->dev_kobj = sysfs_dev_char_kobj;
 
-#if defined(CONFIG_BLOCK)
-	/* let the block class directory show up in the root of sysfs */
-	if (cls != &block_class)
 	cp->subsys.kobj.kset = class_kset;
-#else
-	cp->subsys.kobj.kset = class_kset;
-#endif
 	cp->subsys.kobj.ktype = &class_ktype;
 	cp->class = cls;
 	cls->p = cp;