Remove use of curInfo in allocate_dl_retransmission()

It seems to be assumed that curInfo actually has the currently active
number of layers/PMI. However, I am not sure this would always be true
(e.g., UE might not have been scheduled for some slots, but number of
layers decreased as reported by CSI).  Instead, recalculate the info
from scratch when necessary.

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

@@ -438,13 +438,14 @@ static bool allocate_dl_retransmission(module_id_t module_id,
   NR_UE_DL_BWP_t *dl_bwp = &UE->current_DL_BWP;
   NR_UE_UL_BWP_t *ul_bwp = &UE->current_UL_BWP;
   NR_sched_pdsch_t *retInfo = &sched_ctrl->harq_processes[current_harq_pid].sched_pdsch;
-  NR_sched_pdsch_t *curInfo = &sched_ctrl->sched_pdsch;
+  int layers = get_dl_nrOfLayers(sched_ctrl, dl_bwp->dci_format);
+  int pm_index = get_pm_index(nr_mac, UE, dl_bwp->dci_format, layers, nr_mac->radio_config.pdsch_AntennaPorts.XP);
 
   // If the RI changed between current rtx and a previous transmission
   // we need to verify if it is not decreased
   // othwise it wouldn't be possible to transmit the same TBS
-  int layers = (curInfo->nrOfLayers < retInfo->nrOfLayers) ? curInfo->nrOfLayers : retInfo->nrOfLayers;
-  int pm_index = (curInfo->nrOfLayers < retInfo->nrOfLayers) ? curInfo->pm_index : retInfo->pm_index;
+  layers = (layers < retInfo->nrOfLayers) ? layers : retInfo->nrOfLayers;
+  pm_index = (layers < retInfo->nrOfLayers) ? pm_index : retInfo->pm_index;
 
   const int coresetid = sched_ctrl->coreset->controlResourceSetId;
   const int tda = get_dl_tda(nr_mac, slot);