staging: octeon: remove braces from single-line block

This removes the braces from the if statement that checks the
physical node return value in cvm_oct_phy_setup_device, as this
block contains only one statement. Fixes a style warning.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210206201701.5273-1-phil@philpotter.co.uk


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>