The debugfs_create_dir() function returns error pointers, it doesn't
return NULL.  But debugfs functions don't need to be checked in normal
situations and we can just delete this code.
Fixes: 1f442e213ce5 ("hwmon: (pmbus) Add driver for Delta DPS-920AB PSU")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YMyjmR54ErLtc1sH@mwanda
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
                return;
 
        debugfs_dir = debugfs_create_dir(client->name, root);
-       if (!debugfs_dir)
-               return;
 
        debugfs_create_file("mfr_id",
                            0400,