powerpc/ps3: Remove an unneeded NULL check

Static checkers don't like the inconsistent NULL checking on "ops".
This function is only called once and "ops" isn't NULL so the check
can be removed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ddc3513dc54d15456692c80df49287fe3babe40a.1585340156.git.geoff@infradead.org