sfc: remove EFX_BUG_ON_PARANOID, use EFX_WARN_ON_[ONCE_]PARANOID instead

Logically, EFX_BUG_ON_PARANOID can never be correct.  For, BUG_ON should
 only be used if it is not possible to continue without potential harm;
 and since the non-DEBUG driver will continue regardless (as the BUG_ON is
 compiled out), clearly the BUG_ON cannot be needed in the DEBUG driver.
So, replace every EFX_BUG_ON_PARANOID with either an EFX_WARN_ON_PARANOID
 or the newly defined EFX_WARN_ON_ONCE_PARANOID.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index c9aeb07..4472107 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -129,14 +129,14 @@ struct efx_mcdi_data {
 
 static inline struct efx_mcdi_iface *efx_mcdi(struct efx_nic *efx)
 {
-	EFX_BUG_ON_PARANOID(!efx->mcdi);
+	EFX_WARN_ON_PARANOID(!efx->mcdi);
 	return &efx->mcdi->iface;
 }
 
 #ifdef CONFIG_SFC_MCDI_MON
 static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
 {
-	EFX_BUG_ON_PARANOID(!efx->mcdi);
+	EFX_WARN_ON_PARANOID(!efx->mcdi);
 	return &efx->mcdi->hwmon;
 }
 #endif