[SCSI] zfcp: Handle failures during device allocation correctly
dev_set_name tries to allocate memory, so check the return value for allocation failures. After dev_set_name succeeds, call device_register as next step to be able to use put_device during error handling. Reviewed-by: NSwen Schillig <swen@vnet.ibm.com> Signed-off-by: NChristof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>
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