return error on precoding error

lib/src/phy/mimo/precoding.c

@@ -1454,7 +1454,7 @@ int srslte_predecoding_type_multi(cf_t *y[SRSLTE_MAX_PORTS], cf_t *h[SRSLTE_MAX_
       return srslte_predecoding_single_multi(y, h[0], x[0], nof_rxant, nof_symbols, noise_estimate);              
     } else {
       fprintf(stderr,
-          "Number of ports and layers must be 1 for transmission on single antenna ports\n");
+          "Number of ports and layers must be 1 for transmission on single antenna ports (%d, %d)\n", nof_ports, nof_layers);
       return -1;
     }
     break;

lib/src/phy/phch/pdsch.c

@@ -677,8 +677,10 @@ int srslte_pdsch_decode(srslte_pdsch_t *q,
     }
 
     // Pre-decoder
-    srslte_predecoding_type_multi(q->symbols, q->ce, x, q->nof_rx_antennas, q->cell.nof_ports, cfg->nof_layers,
+    if (srslte_predecoding_type_multi(q->symbols, q->ce, x, q->nof_rx_antennas, q->cell.nof_ports, cfg->nof_layers,
-                                    cfg->codebook_idx, cfg->nbits[0].nof_re, cfg->mimo_type, noise_estimate);
+                                      cfg->codebook_idx, cfg->nbits[0].nof_re, cfg->mimo_type, noise_estimate)<0) {
+      return -1;
+    }
 
     // Layer demapping only if necessary
     if (cfg->nof_layers != nof_tb) {