Addressing performance issues on VGG (#2053)
Addressing performance issues on VGG (#2053)

* Added FLT_MAX to various locations.
* Replaced FLT_MAX with numerics check

* Removed extra semicolon

ROCmSoftwarePlatform/MIOpen,ROCmSoftwarePlatform/MIOpen,ROCmSoftwarePlatform/MIOpen,ROCmSoftwarePlatform/MIOpen,ROCmSoftwarePlatform/MIOpen