staging: sm750fb: fix tabstop style warning

Fixes sm750fb tabstop style warning
found by checkpatch.pl tool
Signed-off-by: Andrea Ghittino <aghittino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/sm750_accel.c

@@ -395,6 +395,6 @@ int sm750_hw_imageblit(struct lynx_accel *accel,
 		pSrcbuf += srcDelta;
 	}
 
-	    return 0;
+	return 0;
 }