staging/rdma/hfi1: Fix memory leaks

Fix 3 memory leaks reported by the LeakCheck tool in the KEDR framework.

The following resources were allocated memory during their respective
initializations but not freed during cleanup:
1. SDMA map elements
2. PIO map elements
3. HW send context to SW index map

This patch fixes the memory leaks by freeing the allocated memory in the
cleanup path.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/staging/rdma/hfi1/init.c

@@ -1324,6 +1324,8 @@ static void cleanup_device_data(struct hfi1_devdata *dd)
 	dd->num_send_contexts = 0;
 	kfree(dd->send_contexts);
 	dd->send_contexts = NULL;
+	kfree(dd->hw_to_sw);
+	dd->hw_to_sw = NULL;
 	kfree(dd->boardname);
 	vfree(dd->events);
 	vfree(dd->status);

drivers/staging/rdma/hfi1/pio.c

@@ -1881,7 +1881,7 @@ void free_pio_map(struct hfi1_devdata *dd)
 	/* Free PIO map if allocated */
 	if (rcu_access_pointer(dd->pio_map)) {
 		spin_lock_irq(&dd->pio_map_lock);
-		kfree(rcu_access_pointer(dd->pio_map));
+		pio_map_free(rcu_access_pointer(dd->pio_map));
 		RCU_INIT_POINTER(dd->pio_map, NULL);
 		spin_unlock_irq(&dd->pio_map_lock);
 		synchronize_rcu();

drivers/staging/rdma/hfi1/sdma.c

@@ -966,7 +966,7 @@ static void sdma_clean(struct hfi1_devdata *dd, size_t num_engines)
 		sde->tx_ring = NULL;
 	}
 	spin_lock_irq(&dd->sde_map_lock);
-	kfree(rcu_access_pointer(dd->sdma_map));
+	sdma_map_free(rcu_access_pointer(dd->sdma_map));
 	RCU_INIT_POINTER(dd->sdma_map, NULL);
 	spin_unlock_irq(&dd->sde_map_lock);
 	synchronize_rcu();