Add a comment explaining why find_tt() will not return error even though
find_tt() is checking for NULL and other errors.
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NSudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20201011205008.24369-1-sudipm.mukherjee@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>