tree b56a3a5df109d3952b7a4c7feb95627e39a6718a
parent 0971f1bed21b16e59eb5d15cd03180f110a1e8c0
author Jules Wang <junqing.wang@cs2c.com.cn> 1400816645 +0800
committer Michael Tokarev <mjt@tls.msk.ru> 1400876923 +0400

dma-helpers: avoid calling dma_bdrv_unmap() twice

Calling dma_bdrv_unmap() twice is not necessary and may cause
potential problems if some code changes.

Signed-off-by: Jules Wang <junqing.wang@cs2c.com.cn>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>