Fix build error - error: function "torchao::marlin_24_gemm" has alrea…

…dy been defined (previous definition at line 83) (#863)

fix compile error

torchao/csrc/cuda/sparse_marlin/marlin_kernel_nm.cu

@@ -852,8 +852,6 @@ __global__ void Marlin_24(
   }
 }
 
-#endif
-
 #define CALL_IF_2_4(NUM_BITS, THREAD_M_BLOCKS, THREAD_N_BLOCKS,               \
                     THREAD_K_BLOCKS, GROUP_BLOCKS)                            \
   else if (num_bits == NUM_BITS && thread_m_blocks == THREAD_M_BLOCKS &&      \
@@ -1119,6 +1117,8 @@ torch::Tensor marlin_24_gemm(torch::Tensor& a, torch::Tensor& b_q_weight,
   return c;
 }
 
+#endif
+
 TORCH_LIBRARY_IMPL(torchao, CUDA, m) {
   m.impl("torchao::marlin_24_gemm", &marlin_24_gemm);
 }