dtc: Simplify error handling for unparseable input

Currently, main() tests if it got a valid input tree from whichever
dt_from_*() function it invoked and if not, die()s.  For one thing,
this test has, for no good reason, three different ways for those
functions to communicate a failure to provide input (bi NULL, bi->dt
NULL, or bi->error non-zero).  For another, in every case save one, if
the dt_from_*() functions are unable to provide input they will
immediately die() (with a more specific error message) rather than
proceeding to the test in main().

Therefore, this patch removes this test, making the one case that
could have triggered it (in dt_from_source()) call die() directly
instead.  With this change, the error field in struct boot_info is now
unused, so remove it.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 0 insertions, 1 deletions

diff --git a/dtc.h b/dtc.h
index d5be1a5..d757242 100644
--- a/dtc.h
+++ b/dtc.h
@@ -232,7 +232,6 @@ struct reserve_info *add_reserve_entry(struct reserve_info *list,
 struct boot_info {
 	struct reserve_info *reservelist;
 	struct node *dt;		/* the device tree */
-	int error;
 };
 
 struct boot_info *build_boot_info(struct reserve_info *reservelist,