[S] Change in flashrom[master]: flashrom.c: Use goto in err path of prepare_flash_access()

[Edward O'Callaghan (Code Review)]

Edward O'Callaghan has uploaded this change for review. ( https://review.coreboot.org/c/flashrom/+/69516 )

Change subject: flashrom.c: Use goto in err path of prepare_flash_access()
......................................................................

flashrom.c: Use goto in err path of prepare_flash_access()

A goto is useful in the special case of error paths in C for
making control flow and cleanups easier to manage.

Change-Id: Ie4f885d7f01fc78e6e431e96435757108bbf0005
Signed-off-by: Edward O'Callaghan 
---
M flashrom.c
1 file changed, 23 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/16/69516/1

diff --git a/flashrom.c b/flashrom.c
index 5483af3..b1782d9 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -1688,18 +1688,20 @@
    		 const bool read_it, const bool write_it,
    		 const bool erase_it, const bool verify_it)
 {
+	int ret = 1;
+
    if (chip_safety_check(flash, flash->flags.force, read_it, write_it, erase_it, verify_it)) {
    	msg_cerr("Aborting.\n");
-		return 1;
+		goto err_out;
    }

if (layout_sanity_checks(flash)) {
    	msg_cerr("Requested regions can not be handled. Aborting.\n");
-		return 1;
+		goto err_out;
    }

if (map_flash(flash) != 0)
-		return 1;
+		goto err_out;

/* Initialize chip_restore_fn_count before chip unlock calls. */
    flash->chip_restore_fn_count = 0;
@@ -1718,24 +1720,26 @@
    	if ((flash->chip->feature_bits & FEATURE_4BA_NATIVE) != FEATURE_4BA_NATIVE
    	    || !spi_master_4ba(flash)) {
    		msg_cerr("Programmer doesn't support this chip. Aborting.\n");
-			return 1;
+			goto err_out;
    	}
    }

/* Enable/disable 4-byte addressing mode if flash chip supports it */
    if (flash->chip->feature_bits & (FEATURE_4BA_ENTER | FEATURE_4BA_ENTER_WREN | FEATURE_4BA_ENTER_EAR7)) {
-		int ret;
    	if (spi_master_4ba(flash))
    		ret = spi_enter_4ba(flash);
    	else
    		ret = spi_exit_4ba(flash);
    	if (ret) {
    		msg_cerr("Failed to set correct 4BA mode! Aborting.\n");
-			return 1;
+			goto err_out;
    	}
    }

return 0;
+
+err_out:
+	return ret;
 }

void finalize_flash_access(struct flashctx *const flash)