SUNRPC: Report network/connection errors correctly for SOFTCONN rpc tasks

In the case of a SOFTCONN rpc task, we really want to ensure that it
reports errors like ENETUNREACH back to the caller. Currently, only
some of these errors are being reported back (connect errors are not),
and they are being converted by the RPC layer into EIO.

Reported-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index c1d8476..3081620 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2202,10 +2202,6 @@
 		 */
 		xs_tcp_force_close(xprt);
 		break;
-	case -ECONNREFUSED:
-	case -ECONNRESET:
-	case -ENETUNREACH:
-		/* retry with existing socket, after a delay */
 	case 0:
 	case -EINPROGRESS:
 	case -EALREADY:
@@ -2216,6 +2212,10 @@
 		/* Happens, for instance, if the user specified a link
 		 * local IPv6 address without a scope-id.
 		 */
+	case -ECONNREFUSED:
+	case -ECONNRESET:
+	case -ENETUNREACH:
+		/* retry with existing socket, after a delay */
 		goto out;
 	}
 out_eagain: