[PATCH] Fix more "if ((err = foo() < 0))" typos

Another reason to use:

	ret = foo();
	if (ret < 0)
		goto out;

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/media/dvb/frontends/mt312.c b/drivers/media/dvb/frontends/mt312.c
index 8d67228..ec4e641 100644
--- a/drivers/media/dvb/frontends/mt312.c
+++ b/drivers/media/dvb/frontends/mt312.c
@@ -501,7 +501,8 @@
 	case ID_VP310:
 	// For now we will do this only for the VP310.
 	// It should be better for the mt312 as well, but tunning will be slower. ACCJr 09/29/03
-		if ((ret = mt312_readreg(state, CONFIG, &config_val) < 0))
+		ret = mt312_readreg(state, CONFIG, &config_val);
+		if (ret < 0)
 			return ret;
 		if (p->u.qpsk.symbol_rate >= 30000000) //Note that 30MS/s should use 90MHz
 		{