staging: et131x: Reduce indenting in et131x_rx_dma_memory_free()

This change negates an 'if' statement, allowing a large block of code
to be un-indented, making the code more readable.
Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/et131x/et131x.c

@@ -2443,14 +2443,15 @@ static void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
 
 	/* Free Free Buffer Rings */
 	for (id = 0; id < NUM_FBRS; id++) {
-		if (rx_ring->fbr[id]->ring_virtaddr) {
+		if (!rx_ring->fbr[id]->ring_virtaddr)
+			continue;
+
 		/* First the packet memory */
-			for (index = 0; index <
-				(rx_ring->fbr[id]->num_entries / FBR_CHUNKS);
+		for (index = 0;
+		     index < (rx_ring->fbr[id]->num_entries / FBR_CHUNKS);
 		     index++) {
 			if (rx_ring->fbr[id]->mem_virtaddrs[index]) {
-
-					bufsize = (rx_ring->fbr[id]->buffsize * FBR_CHUNKS);
+				bufsize = rx_ring->fbr[id]->buffsize * FBR_CHUNKS;
 
 				dma_free_coherent(&adapter->pdev->dev,
 					bufsize,
@@ -2470,7 +2471,6 @@ static void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
 
 		rx_ring->fbr[id]->ring_virtaddr = NULL;
 	}
-	}
 
 	/* Free Packet Status Ring */
 	if (rx_ring->ps_ring_virtaddr) {