atl1c: remove redundant assignment to variable size

Variable sie is being assigned a value that is never read. The
The assignment is redundant and can be removed.

Cleans up clang scan build warning:
drivers/net/ethernet/atheros/atl1c/atl1c_main.c:1054:22: warning:
Although the value stored to 'size' is used in the enclosing
expression, the value is never actually read from 'size'
[deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220318005021.82073-1-colin.i.king@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/atheros/atl1c/atl1c_main.c

@@ -1051,7 +1051,7 @@ static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter)
 	 * each ring/block may need up to 8 bytes for alignment, hence the
 	 * additional bytes tacked onto the end.
 	 */
-	ring_header->size = size =
+	ring_header->size =
 		sizeof(struct atl1c_tpd_desc) * tpd_ring->count * tqc +
 		sizeof(struct atl1c_rx_free_desc) * rfd_ring->count * rqc +
 		sizeof(struct atl1c_recv_ret_status) * rfd_ring->count * rqc +