drivers/elog: Remove NULL check for array created in code

Checking to see if a the location of a static variable is NULL isn't
super useful. If the check ever fails, there are much larger issues.

Found-by: Coverity Scan #1452607
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I6d3e012542287511f61807075c998efd6d10441e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78614
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/drivers/elog/elog.c b/src/drivers/elog/elog.c
index 687e68b..ecee145 100644
--- a/src/drivers/elog/elog.c
+++ b/src/drivers/elog/elog.c
@@ -761,10 +761,6 @@
 
 	elog_size = region_device_sz(&elog_state.nv_dev);
 	mirror_buffer = elog_mirror_buf;
-	if (!mirror_buffer) {
-		printk(BIOS_ERR, "ELOG: Unable to allocate backing store\n");
-		return -1;
-	}
 	rdev_chain_mem_rw(&elog_state.mirror_dev, mirror_buffer, elog_size);
 
 	/*