mx3fb: fix regression with uninitalized fb_info->mm_lock mutex

Remove call to the mx3fb_set_par() and the mx3fb_blank() before the
register_framebuffer().

This fixes a problem with uninitialized the fb_info->mm_lock mutex
introduced by the commit 537a1bf059f " fbdev: add mutex for fb_mmap
locking"

Signed-off-by: Krzysztof Helt <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/video/mx3fb.c

···
 	init_completion(&mx3fbi->flip_cmpl);
 	disable_irq(ichan->eof_irq);
 	dev_dbg(mx3fb->dev, "disabling irq %d\n", ichan->eof_irq);
-	ret = mx3fb_set_par(fbi);
-	if (ret < 0)
-		goto esetpar;
-
-	mx3fb_blank(FB_BLANK_UNBLANK, fbi);
 
 	dev_info(dev, "registered, using mode %s\n", fb_mode);