Move 'DMA mapping failed' print to the failure handling case of the c… #160
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…onditional
Printing of 'DMA mapping failed' was being done when dma_mapping_error() returned false instead of when it returned true.
Description
The change was to move the 'DMA mapping failed' print to the case when dma_mapping_error() returned true. This avoids this print appearing for each DMA buffer registered in dmesg output and in /var/log/messages.