wil6210: free edma_rx_swtail upon reset

edma_rx_swtail dma memory free is missing.
Add this part of Rx desc ring free.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/wil6210/txrx_edma.c

@@ -428,6 +428,9 @@ static void wil_ring_free_edma(struct wil6210_priv *wil, struct wil_ring *ring)
 			     &ring->pa, ring->ctx);
 
 		wil_move_all_rx_buff_to_free_list(wil, ring);
+		dma_free_coherent(dev, sizeof(*ring->edma_rx_swtail.va),
+				  ring->edma_rx_swtail.va,
+				  ring->edma_rx_swtail.pa);
 		goto out;
 	}