SUNRPC: Don't suppress socket errors when a message read completes

If the message read completes, but the socket returned an error
condition, we should ensure to propagate that error.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

net/sunrpc/xprtsock.c

@@ -508,13 +508,10 @@ xs_read_stream_request(struct sock_xprt *transport, struct msghdr *msg,
 				&read);
 		transport->recv.offset += read;
 		transport->recv.copied += read;
-	} else
-		read = 0;
+	}
 
-	if (transport->recv.offset == transport->recv.len) {
+	if (transport->recv.offset == transport->recv.len)
 		xs_read_stream_check_eor(transport, msg);
-		return read;
-	}
 
 	if (want == 0)
 		return 0;