[PATCH v1] media: atomisp: fix compilation error

[Tong Zhang <ztong0001@gmail.com>]

I am getting the following compilation error on ubuntu 20.04 with gcc 9.3.0.

drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c: In function ‘input_system_configure_channel_sensor’:
drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c:1649:1: error: control reaches end of non-void function [-Werror=return-type]
 1649 | }
      | ^
cc1: some warnings being treated as errors
make[4]: *** [scripts/Makefile.build:277: drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.o] Error 1

I made some minor changes to the switch-case to keep gcc happy.

Signed-off-by: Tong Zhang <ztong0001@gmail.com>
---
 .../media/atomisp/pci/hive_isp_css_common/host/input_system.c  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
index 8e085dda0c18..58eb74edc953 100644
--- a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
+++ b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/input_system.c
@@ -1644,8 +1644,9 @@ static input_system_err_t input_system_configure_channel_sensor(
 	case INPUT_SYSTEM_XMEM_CAPTURE:
 	case INPUT_SYSTEM_XMEM_ACQUIRE:
 	default:
-		return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
+		break;
 	}
+	return INPUT_SYSTEM_ERR_PARAMETER_NOT_SUPPORTED;
 }
 
 // Test flags and set structure.
-- 
2.25.1