can: gw: Remove pointless casts

No need to cast return value of nla_data()

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
diff --git a/net/can/gw.c b/net/can/gw.c
index 20c36e1..b54d5e6 100644
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -661,8 +661,7 @@
 	if (modidx) {
 
 		if (tb[CGW_CS_CRC8]) {
-			struct cgw_csum_crc8 *c = (struct cgw_csum_crc8 *)\
-				nla_data(tb[CGW_CS_CRC8]);
+			struct cgw_csum_crc8 *c = nla_data(tb[CGW_CS_CRC8]);
 
 			err = cgw_chk_csum_parms(c->from_idx, c->to_idx,
 						 c->result_idx);
@@ -686,8 +685,7 @@
 		}
 
 		if (tb[CGW_CS_XOR]) {
-			struct cgw_csum_xor *c = (struct cgw_csum_xor *)\
-				nla_data(tb[CGW_CS_XOR]);
+			struct cgw_csum_xor *c = nla_data(tb[CGW_CS_XOR]);
 
 			err = cgw_chk_csum_parms(c->from_idx, c->to_idx,
 						 c->result_idx);