media: atomisp: Remove atomisp_ospm_dphy_down() call from probe error path

media: atomisp: Remove atomisp_ospm_dphy_down() call from probe error path

The only thing which atomisp_ospm_dphy_down() does is disable the CSI
pins, but if we failed to probe the ISP then these will never have
been enabled (because the ISP never started streaming).

So the atomisp_ospm_dphy_down() call in the probe error path is
unnecessary, remove it.

Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>