meta-quanta: gbs: Fix WCTemp in read-margin-temp-wait.sh

The backup WCTemp was being set to 72000 * 1000, clean up the logic.

Signed-off-by: Brandon Kim <brandonkim@google.com>
Change-Id: Ic752b188cb06f9755fcfa6f21f530dcb979ac813
diff --git a/meta-quanta/meta-gbs/recipes-quanta/fans/read-margin-temp/read-margin-temp-wait.sh b/meta-quanta/meta-gbs/recipes-quanta/fans/read-margin-temp/read-margin-temp-wait.sh
index 8dd4087..0937a9f 100644
--- a/meta-quanta/meta-gbs/recipes-quanta/fans/read-margin-temp/read-margin-temp-wait.sh
+++ b/meta-quanta/meta-gbs/recipes-quanta/fans/read-margin-temp/read-margin-temp-wait.sh
@@ -43,12 +43,12 @@
             sleep 1
         done
 
-        if [[ "${actualWCTemp}" -eq 0 ]]; then
-            echo "${nvmePath}${i} WCTemp was read to be 0, setting to default WCTemp: ${wcTemp}"
-            actualWCTemp="${wcTemp}"
+        if [[ "${actualWCTemp}" -ne 0 ]]; then
+            wcTemp="$((actualWCTemp * 1000))"
+        else
+            echo "${nvmePath}${i} WCTemp was read to be 0, using default WCTemp: ${wcTemp}"
         fi
 
-        wcTemp="$((actualWCTemp * 1000))"
         if [[ -z "$nvmeList" ]]; then
             nvmeList="\"nvme"${i}"\""
         else