[SCSI] qla2xxx: Free DMA memory only if it is allocated in vendor specific BSG command
The qla84xx_mgmt_cmd function supports multiple subcommands. Some subcommands require DMA memory and some do not. Therefore check before freeing DMA memory whether it is allocated or not. Signed-off-by: NHarish Zunjarrao <harish.zunjarrao@qlogic.com> Signed-off-by: NGiridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>
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