[media] s5p-mfc: fix bad indentation

drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c:187 s5p_mfc_alloc_codec_buffers_v5() warn: inconsistent indenting

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>