VtsHalTargetTest: Improve error checks

Wrap subroutine calls with ASSERT_NO_FATAL_FAILURE for better
error handling

Bug: 305866207
Test: atest --test-mapping hardware/interfaces/audio/aidl/vts/

Change-Id: I6a2dc8a0237317b405028148eccda31657b6494d
diff --git a/audio/aidl/vts/VtsHalAGC2TargetTest.cpp b/audio/aidl/vts/VtsHalAGC2TargetTest.cpp
index ccac8c5..9dec383 100644
--- a/audio/aidl/vts/VtsHalAGC2TargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAGC2TargetTest.cpp
@@ -146,17 +146,17 @@
 
 TEST_P(AGC2ParamTest, SetAndGetDigitalGainParam) {
     addDigitalGainParam(mGain);
-    SetAndGetParameters();
+    ASSERT_NO_FATAL_FAILURE(SetAndGetParameters());
 }
 
 TEST_P(AGC2ParamTest, SetAndGetSaturationMargin) {
     addSaturationMarginParam(mMargin);
-    SetAndGetParameters();
+    ASSERT_NO_FATAL_FAILURE(SetAndGetParameters());
 }
 
 TEST_P(AGC2ParamTest, SetAndGetLevelEstimator) {
     addLevelEstimatorParam(mLevelEstimator);
-    SetAndGetParameters();
+    ASSERT_NO_FATAL_FAILURE(SetAndGetParameters());
 }
 
 std::vector<std::pair<std::shared_ptr<IFactory>, Descriptor>> kDescPair;