qla4xxx: check the return value of dma_alloc_coherent()
the qla4xxx_alloc_fw_dump() calls dma_alloc_coherent() but does not check its return value. Signed-off-by:Maurizio Lombardi <mlombard@redhat.com> Acked-By:
Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by:
Christoph Hellwig <hch@lst.de>
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