Change in coreboot[master]: amdfwtool: Null check the pointers before using them

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/54999 )

Change subject: amdfwtool: Null check the pointers before using them
......................................................................

amdfwtool: Null check the pointers before using them

BUG=b:188769922

Reported-by: Coverity (CID:1438963)
Change-Id: Ia520e33c9e4065236478665fb0ef047fa47c9b81
Signed-off-by: Zheng Bao 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54999
Reviewed-by: Felix Held 
Tested-by: build bot (Jenkins) 
---
M util/amdfwtool/amdfwtool.c
1 file changed, 5 insertions(+), 2 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Felix Held: Looks good to me, approved

diff --git a/util/amdfwtool/amdfwtool.c b/util/amdfwtool/amdfwtool.c
index 825dea6..1e75278 100644
--- a/util/amdfwtool/amdfwtool.c
+++ b/util/amdfwtool/amdfwtool.c
@@ -397,10 +397,13 @@

if (!count)
    	return;
+	if (ctx == NULL || directory == NULL) {
+		fprintf(stderr, "Calling %s with NULL pointers\n", __func__);
+		return;
+	}

/* The table size needs to be 0x1000 aligned. So align the end of table. */
-	if (ctx != NULL)
-		ctx->current = ALIGN(ctx->current, TABLE_ALIGNMENT);
+	ctx->current = ALIGN(ctx->current, TABLE_ALIGNMENT);

switch (cookie) {
    case PSP2_COOKIE: