Change in coreboot[master]: amd/stoneyridge/dimm_spd.c: Fix dereference before NULL check

[Richard Spiegel (Code Review)]

Richard Spiegel has uploaded this change for review. ( https://review.coreboot.org/22612

Change subject: amd/stoneyridge/dimm_spd.c: Fix dereference before NULL check
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amd/stoneyridge/dimm_spd.c: Fix dereference before NULL check

Coverity reported pointer dev being dereferenced when assigning pointer
conf, before checking dev for NULL. Pointer dev must be NULL checked
before assigning a value to pointer conf.

BUG=b:69669995

Change-Id: Ic435b1290c9d3667b890ecc29c5147a25c16b96f
Signed-off-by: Richard Spiegel 
---
M src/soc/amd/stoneyridge/dimm_spd.c
1 file changed, 5 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/22612/1

diff --git a/src/soc/amd/stoneyridge/dimm_spd.c b/src/soc/amd/stoneyridge/dimm_spd.c
index d9f6355..26cd335 100644
--- a/src/soc/amd/stoneyridge/dimm_spd.c
+++ b/src/soc/amd/stoneyridge/dimm_spd.c
@@ -26,9 +26,12 @@
 {
    uint8_t spd_address;
    DEVTREE_CONST struct device *dev = dev_find_slot(0, DCT_DEVFN);
-	DEVTREE_CONST struct soc_amd_stoneyridge_config *conf = dev->chip_info;
+	DEVTREE_CONST struct soc_amd_stoneyridge_config *conf;

-	if ((dev == 0) || (conf == 0))
+	if (dev == 0)
+		return AGESA_ERROR;
+	conf = dev->chip_info;
+	if (conf == 0)
    	return AGESA_ERROR;
    if (info->SocketId >= ARRAY_SIZE(conf->spd_addr_lookup))
    	return AGESA_ERROR;