The "idesc" pointer points to the middle of rdesc[] array so it can't be
NULL.  Also rdesc isn't NULL.  Delete the check.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/01cd578f-127b-4c8b-a8c6-5e11a0a2555c@stanley.mountainSigned-off-by: Mark Brown <broonie@kernel.org>