net/sunrpc: Convert (void)snprintf to snprintf

(Applies on top of "Remove uses of NIPQUAD, use %pI4")

Casts to void of snprintf are most uncommon in kernel source.
9 use casts, 1301 do not.

Remove the remaining uses in net/sunrpc/
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/sunrpc/xprtrdma/transport.c

@@ -160,15 +160,15 @@ xprt_rdma_format_addresses(struct rpc_xprt *xprt)
 	(void)rpc_ntop(sap, buf, sizeof(buf));
 	xprt->address_strings[RPC_DISPLAY_ADDR] = kstrdup(buf, GFP_KERNEL);
 
-	(void)snprintf(buf, sizeof(buf), "%u", rpc_get_port(sap));
+	snprintf(buf, sizeof(buf), "%u", rpc_get_port(sap));
 	xprt->address_strings[RPC_DISPLAY_PORT] = kstrdup(buf, GFP_KERNEL);
 
 	xprt->address_strings[RPC_DISPLAY_PROTO] = "rdma";
 
-	(void)snprintf(buf, sizeof(buf), "%08x", ntohl(sin->sin_addr.s_addr));
+	snprintf(buf, sizeof(buf), "%08x", ntohl(sin->sin_addr.s_addr));
 	xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
 
-	(void)snprintf(buf, sizeof(buf), "%4hx", rpc_get_port(sap));
+	snprintf(buf, sizeof(buf), "%4hx", rpc_get_port(sap));
 	xprt->address_strings[RPC_DISPLAY_HEX_PORT] = kstrdup(buf, GFP_KERNEL);
 
 	/* netid */

net/sunrpc/xprtsock.c

@@ -314,10 +314,10 @@ static void xs_format_common_peer_ports(struct rpc_xprt *xprt)
 	struct sockaddr *sap = xs_addr(xprt);
 	char buf[128];
 
-	(void)snprintf(buf, sizeof(buf), "%u", rpc_get_port(sap));
+	snprintf(buf, sizeof(buf), "%u", rpc_get_port(sap));
 	xprt->address_strings[RPC_DISPLAY_PORT] = kstrdup(buf, GFP_KERNEL);
 
-	(void)snprintf(buf, sizeof(buf), "%4hx", rpc_get_port(sap));
+	snprintf(buf, sizeof(buf), "%4hx", rpc_get_port(sap));
 	xprt->address_strings[RPC_DISPLAY_HEX_PORT] = kstrdup(buf, GFP_KERNEL);
 }