i40e: shorten wordy fields

The alloc_rx_buff_failed and alloc_rx_page_failed variables
are both part of an rx specific structure so just remove
the _rx part of the name.  No functional changes.

Change-ID: Icffa2f5d13c6f2b1e09cf45b9472b83c9dae8fc6
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 4b75de8e..e270b61 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -786,8 +786,8 @@
 		} while (u64_stats_fetch_retry_bh(&p->syncp, start));
 		rx_b += bytes;
 		rx_p += packets;
-		rx_buf += p->rx_stats.alloc_rx_buff_failed;
-		rx_page += p->rx_stats.alloc_rx_page_failed;
+		rx_buf += p->rx_stats.alloc_buff_failed;
+		rx_page += p->rx_stats.alloc_page_failed;
 	}
 	rcu_read_unlock();
 	vsi->tx_restart = tx_restart;