media: atomisp: Remove second increment of count in atomisp_subdev_probe

Clang warns:

../drivers/staging/media/atomisp/pci/atomisp_v4l2.c:1097:3: warning:
variable 'count' is incremented both in the loop header and in the loop
body [-Wfor-loop-analysis]
                count++;
                ^

This was probably unintentional, remove it.

Link: https://github.com/ClangBuiltLinux/linux/issues/1036



Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>