Forgot to init matrix handle

Author: WeiqunZhang

Src/LinearSolvers/AMReX_SpMV.H

@@ -171,6 +171,7 @@ void SpMV (AlgVector<T>& y, SpMatrix<T> const& A, AlgVector<T> const& x)
 
     amrex::ignore_unused(nnz);
     mkl::sparse::matrix_handle_t handle{};
+    mkl::sparse::init_matrix_handle(&handle);
 
 #if defined(INTEL_MKL_VERSION) && (INTEL_MKL_VERSION < 20250300)
     mkl::sparse::set_csr_data(Gpu::Device::streamQueue(), handle, nrows, ncols,
@@ -184,6 +185,9 @@ void SpMV (AlgVector<T>& y, SpMatrix<T> const& A, AlgVector<T> const& x)
 
 #endif
 
+    auto ev = mkl::sparse::release_matrix_handle(Gpu::Device::streamQueue(), &handle);
+    ev.wait();
+
     AMREX_GPU_ERROR_CHECK();
 
 #else