media: atomisp: make function calls cleaner

The #ifs inside the code makes confusing for reviewers and also
cause problems with smatch:
	drivers/staging/media/atomisp/pci/atomisp2/atomisp_ioctl.c:2937:1: error: directive in argument list
	drivers/staging/media/atomisp/pci/atomisp2/atomisp_ioctl.c:2939:1: error: directive in argument list
	drivers/staging/media/atomisp/pci/atomisp2/atomisp_ioctl.c:2941:1: error: directive in argument list
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>

drivers/staging/media/atomisp/pci/atomisp2/atomisp_ioctl.c

@@ -2933,13 +2933,15 @@ static long atomisp_vidioc_default(struct file *file, void *fh,
 #else
 		if (isp->motor)
 #endif
-			err = v4l2_subdev_call(
 #ifndef ISP2401
+			err = v4l2_subdev_call(
 					isp->inputs[asd->input_curr].motor,
+					core, ioctl, cmd, arg);
 #else
+			err = v4l2_subdev_call(
 					isp->motor,
-#endif
 					core, ioctl, cmd, arg);
+#endif
 		else
 			err = v4l2_subdev_call(
 					isp->inputs[asd->input_curr].camera,