libcamera2ndk_vendor: Don't retrieve value from failed HIDL calls.

Bug: 134424054

Test: AImageReaderVendorTest; use libcamera2ndk_vendor client on device.

Change-Id: Id6ebfc7c37af8d814a1bedfffdde14a8397591a5
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>
1 file changed