video: da8xx-fb: Fix build warning on unused label

Patch fixes build warning on label "err_cpu_freq" when CONFIG_CPU_FREQ
is not defined.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 9ecc307..720cb83 100644
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -1270,8 +1270,8 @@
 irq_freq:
 #ifdef CONFIG_CPU_FREQ
 	lcd_da8xx_cpufreq_deregister(par);
-#endif
 err_cpu_freq:
+#endif
 	unregister_framebuffer(da8xx_fb_info);
 
 err_dealloc_cmap: