common/sfc_efx/base: fix maximum Tx data count

[ upstream commit 79b0c19 ]

Maximum data count of a Tx descriptor is advertised to users,
however, this value is mistakenly derived from the Rx define.
Use the Tx one instead. The resulting value will be the same.

Fixes: 1e43fe3 ("net/sfc/base: separate limitations on Tx DMA descriptors")

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>

drivers/common/sfc_efx/base/ef10_nic.c

@@ -2185,7 +2185,7 @@ ef10_nic_board_cfg(
 	/* Alignment for WPTR updates */
 	encp->enc_rx_push_align = EF10_RX_WPTR_ALIGN;
 
-	encp->enc_tx_dma_desc_size_max = EFX_MASK32(ESF_DZ_RX_KER_BYTE_CNT);
+	encp->enc_tx_dma_desc_size_max = EFX_MASK32(ESF_DZ_TX_KER_BYTE_CNT);
 	/* No boundary crossing limits */
 	encp->enc_tx_dma_desc_boundary = 0;