afs: call->operation_ID sometimes used as __be32 sometimes as u32

call->operation_ID is sometimes being used as __be32 sometimes is being
used as u32.  Be consistent and settle on using as u32.

Signed-off-by: David Howells <dhowells@redhat.com.
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index 477928b..25f05a8 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -676,10 +676,11 @@
 	ASSERTCMP(call->offset, <, 4);
 
 	/* the operation ID forms the first four bytes of the request data */
-	ret = afs_extract_data(call, &call->operation_ID, 4, true);
+	ret = afs_extract_data(call, &call->tmp, 4, true);
 	if (ret < 0)
 		return ret;
 
+	call->operation_ID = ntohl(call->tmp);
 	call->state = AFS_CALL_AWAIT_REQUEST;
 	call->offset = 0;