tzcom: Set buffer address to NULL when alloc fails

Signed-off-by: Sachin Shah <sachins@codeaurora.org>
diff --git a/drivers/misc/tzcom.c b/drivers/misc/tzcom.c
index 63864ef..2447a8d 100644
--- a/drivers/misc/tzcom.c
+++ b/drivers/misc/tzcom.c
@@ -936,6 +936,7 @@
 			PMEM_ALIGNMENT_4K);
 	if (IS_ERR((void *)sb_in_phys)) {
 		PERR("could not allocte in kernel pmem buffers for sb_in");
+		sb_in_phys = 0;
 		rc = -ENOMEM;
 		goto class_device_destroy;
 	}
@@ -955,6 +956,7 @@
 			PMEM_ALIGNMENT_4K);
 	if (IS_ERR((void *)sb_out_phys)) {
 		PERR("could not allocte in kernel pmem buffers for sb_out");
+		sb_out_phys = 0;
 		rc = -ENOMEM;
 		goto class_device_destroy;
 	}