soc: ti: knav: Drop unnecessary check for property presence

soc: ti: knav: Drop unnecessary check for property presence

of_property_read_u32() returns -EINVAL if a property is not present, so
the preceding check for presence with of_get_property() can be
dropped.

This is part of a larger effort to remove callers of of_get_property()
and similar functions. of_get_property() leaks the DT struct property
and data pointers which is a problem for dynamically allocated nodes
which may be freed.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240731201407.1838385-2-robh@kernel.org
Signed-off-by: Nishanth Menon <nm@ti.com>