soc: qcom: smem: Avoid NULL pointer exception on remove

Don't set a pointer to NULL and then dereference it in the next
line.

Cc: Bjorn Andersson <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>
Reviewed-by: Bjorn Andersson <[e-mail]>
Signed-off-by: Andy Gross <[e-mail]>

drivers/soc/qcom/smem.c

···
 
 static int qcom_smem_remove(struct platform_device *pdev)
 {
-	__smem = NULL;
 	hwspin_lock_free(__smem->hwlock);
+	__smem = NULL;
 
 	return 0;
 }