ipv4: removed redundant conditional

Since fib_lookup cannot return ESRCH no longer,
checking for this error code is no longer neccesary.
Signed-off-by: NNiv Yehezkel <executerx@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/route.c

@@ -1798,8 +1798,6 @@ out:	return err;
 no_route:
 	RT_CACHE_STAT_INC(in_no_route);
 	res.type = RTN_UNREACHABLE;
-	if (err == -ESRCH)
-		err = -ENETUNREACH;
 	goto local_input;
 
 	/*