net: ti: am65-cpsw-nuss: fix error handling for "RX dma add buf failed"

The RX DMA channel has been requested at this point already, so it must
be freed.

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
diff --git a/drivers/net/ti/am65-cpsw-nuss.c b/drivers/net/ti/am65-cpsw-nuss.c
index e0968f6..c70b42f 100644
--- a/drivers/net/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ti/am65-cpsw-nuss.c
@@ -361,7 +361,7 @@
 					  UDMA_RX_BUF_SIZE);
 		if (ret) {
 			dev_err(dev, "RX dma add buf failed %d\n", ret);
-			goto err_free_tx;
+			goto err_free_rx;
 		}
 	}